40 Free Spins No Deposit: How UK Casinos Actually Run These Offers in 2026
Forty free spins with no deposit required is the most searched casino bonus format in Britain, and also the most misunderstood. The headline number is simple. The mechanics behind it are not. A UK-licensed operator handing out 40 spins without asking for a card is absorbing real cost: at a 10p spin value that is £4 of stake given away per player, before any winnings are paid. Multiply by a few thousand sign-ups a month and you are looking at a marketing line item most affiliates never see.
This guide covers how the offers work, which operators run them, what the wagering conditions really mean, and how the responsible gambling toolkit sitting behind every UK account functions at code level. Session timers, reality checks, cooling-off periods, self-exclusion via GAMSTOP. All of it is verifiable, none of it is decoration.
What Does 40 Free Spins No Deposit Actually Mean?
A no deposit bonus means the casino credits spins to your account before you have funded it. You register, verify, and the spins appear. Forty is the standard number because it maps neatly onto a 10p spin value across 40 rounds, or a 20p value across 20 rounds with a doubled allocation. The maths matters more than the marketing.
What you win from those spins is almost never withdrawable at face value. It becomes bonus credit, and bonus credit carries wagering. That is the trade. The casino is buying your registration and your attention with a small, tightly bounded amount of risk.
How much are 40 free spins worth in real money?
Value depends entirely on the spin denomination. At 10p per spin, 40 spins represent £4 of stake. At 20p, £8. At 50p, £20. Most UK no deposit offers sit at the 10p tier, which means the theoretical value to you, before wagering, is under a fiver. Anyone advertising "£20 of free spins" is usually quoting the top spin value on a game you are unlikely to be assigned.
Are 40 free spins really free if there is no deposit?
Yes, in the literal sense: no card, no bank transfer, no minimum deposit. The cost is your data and your time. You will hand over name, address, date of birth and often a mobile number, and you will pass age and identity checks before any withdrawal. Under UK Gambling Commission rules, verification must complete before funds leave the account, and that check is not optional.
How the UK Licensing Rules Shape Every No Deposit Offer
Since the 2020 credit card ban and the tightening of bonus rules that followed, UK-licensed operators cannot offer spins that require a deposit to "unlock" without stating it plainly. The Gambling Commission's remote gambling and software technical standards also cap certain bonus mechanics. Autoplay is restricted. Losses disguised as wins must be presented honestly.
This is why a 40 free spins no deposit offer from a UK-licensed brand looks leaner than the equivalent from an offshore operator. The offshore version often advertises 200 spins, a £50 bonus, and a 20x wagering requirement that quietly excludes most games. The UK version is smaller and more honest about it.
What is the minimum legal age to claim free spins in the UK?
Eighteen. Full stop. The Gambling Act 2005 sets 18 as the minimum age for all remote casino and bingo products in Great Britain, and every UK-licensed operator must verify age before allowing play. Age verification happens at registration via credit reference or identity data, and a failed check blocks the account immediately.
Which regulator covers no deposit bonuses?
The Gambling Commission licenses and regulates all commercial gambling in Great Britain. Operators must display their licence number, and you can check it on the Commission's public register. If a site offering 40 free spins does not show a UK licence number, it is operating under a different jurisdiction, usually Curaçao or Malta, and different consumer protections apply.
How Responsible Gambling Tools Work Behind the Scenes
Every UK-licensed account sits inside a compliance layer most players never notice until they need it. Session reminders fire at intervals you set. Reality checks interrupt play with a summary of time and money spent. Deposit limits apply at the account level and cannot be raised on impulse. These are not optional features; they are licensing conditions.
Understanding how they work matters because the tools are your only real defence against a bad session. A casino will not stop you from losing £500 at 2am unless you have configured something that does. The configuration takes four minutes and it is the single most useful thing you can do after registering.
How does a session timer actually work?
You set a duration, typically 30, 60 or 120 minutes. The system logs your login timestamp and pushes a reminder at the threshold. Some operators, including those running on the Playtech and IGT platforms, display a persistent on-screen clock. The timer does not log you out by default; it prompts. You decide whether to continue.
What is a reality check and when does it trigger?
A reality check is a mandatory pop-up showing your net position over a set period, usually the last 30 or 60 minutes. It states how much you have staked, how much you have won, and how long you have been playing. UK rules require these to be available and configurable. Operators such as Bet365 casino and William Hill casino surface them through the account settings menu rather than mid-game.
Can you set a deposit limit that takes effect immediately?
Yes, but only downward. UK rules require that a reduction in deposit limit takes effect immediately or at your next login, while an increase requires a 24-hour cooling-off period before it applies. That asymmetry is deliberate. It removes the ability to raise a limit in the middle of a losing session and keep going.
What happens during a cooling-off period?
Cooling-off is a short self-imposed break, typically 24 hours to 6 weeks. During it, you cannot deposit or place bets, but you can still log in to withdraw and to access support. It is distinct from self-exclusion, which is longer and more restrictive. Most UK operators offer cooling-off through the safer gambling section of the account.
How does GAMSTOP self-exclusion work?
GAMSTOP is the national self-exclusion scheme for online gambling in Great Britain. Registering excludes you from every UK-licensed operator for a minimum of six months, extendable to five years. It works via a central database that operators must query. Once active, attempts to open a new account at a licensed site are blocked at registration.
Where do you get problem gambling support in the UK?
GamCare runs the National Gambling Helpline on 0808 8020 133, free and open 24 hours a day. GambleAware funds treatment and prevention across England, Scotland and Wales. Both are independent of the industry. If a session stops being entertainment, these are the numbers that matter, not the bonus terms.
Which UK Operators Offer 40 Free Spins No Deposit in 2026?
The list below covers brands that have run no deposit spin offers in the UK market. Terms change constantly, so treat the specifics as indicative rather than fixed. What does not change is the licensing, the wagering pattern, and the fact that UK-licensed offers are consistently smaller than offshore equivalents.
| Operator | Typical No Deposit Offer | Wagering | Licence |
|---|---|---|---|
| Bet365 casino | Spins on selected slots for new registrations | Usually 30x–40x bonus | UKGC |
| William Hill casino | Free spins bundle on qualifying slots | 35x typical | UKGC |
| Sky Bet casino | Spins on Sky Vegas-linked slots | 30x–40x | UKGC |
| Ladbrokes casino | Spin allocation on selected titles | 35x | UKGC |
| Paddy Power casino | Free spins on registration | 35x–40x | UKGC |
| Coral casino | Spins on named slot titles | 35x | UKGC |
| Betfred casino | Spin bundle, often game-specific | 40x | UKGC |
| Gala Bingo | Free spins plus bingo tickets | Varies | UKGC |
| Sky Vegas casino | Spin offer on selected slots | 30x–40x | UKGC |
| Betfair casino | Free spins for new accounts | 35x | UKGC |
| BoyleSports casino | Spin allocation on registration | 35x–40x | UKGC |
| Virgin Games casino | Free spins on named titles | 40x | UKGC |
| Betway casino | Spin bundle | 35x | UKGC |
| JackpotJoy casino | Spins plus bingo access | Varies | UKGC |
| Foxy Bingo | Free spins on slots | Varies | UKGC |
| Admiral casino | Spin offer for new players | 35x | UKGC |
| 32Red casino | Free spins on selected titles | 40x | UKGC |
| 888 Casino | Spin bundle, no deposit tier | 30x–40x | UKGC |
| Virgin casino | Spins on registration | 40x | UKGC |
| BetVictor casino | Free spins on named slots | 35x | UKGC |
| PartyCasino | Spin offer, game-specific | 35x | UKGC |
| Monopoly Casino | Free spins on Monopoly slots | 40x | UKGC |
| Grosvenor Casinos | Spins for new registrations | 35x | UKGC |
| Unibet casino | Free spins bundle | 30x–35x | UKGC |
| Sun Bingo | Spins plus bingo tickets | Varies | UKGC |
| MrQ casino | Free spins, no wagering on winnings | 0x–1x | UKGC |
| Double Bubble Bingo | Spin allocation | Varies | UKGC |
| Heart Bingo | Free spins on slots | Varies | UKGC |
| Rainbow Riches Casino | Spins on Rainbow Riches titles | 40x | UKGC |
| Midnite casino | Free spins for new accounts | 35x | UKGC |
| Lottoland casino | Spins plus lottery entries | Varies | UKGC |
| BetMGM casino | Spin bundle | 35x | UKGC |
| PlayOJO casino | Free spins, no wagering | 0x | UKGC |
| LottoGo casino | Spins on selected titles | Varies | UKGC |
| LiveScore Bet | Free spins for new players | 35x | UKGC |
| talkSPORT BET | Spin offer | 35x | UKGC |
| Mr Vegas casino | Free spins bundle | 35x | UKGC |
| Pub Casino | Spins on registration | 40x | UKGC |
| Tote casino | Free spins on slots | 35x | UKGC |
| Gala Casino | Spin allocation | 35x | UKGC |
| NetBet casino | Free spins bundle | 35x–40x | UKGC |
| Mystake casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| Goldenbet casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| Genting Casino | Spins for new registrations | 35x | UKGC |
| Kwiff casino | Free spins on selected slots | 35x | UKGC |
| bwin casino | Spin bundle | 35x | UKGC |
| Lottomart casino | Spins plus lottery products | Varies | UKGC |
| Fabulous Bingo | Free spins for new players | Varies | UKGC |
| Slots Temple | Free play, no deposit | N/A | UKGC |
| 10bet casino | Spin offer | 35x | UKGC |
| Casumo casino | Free spins bundle | 30x–35x | UKGC |
| 888 Sport | Spins on selected slots | 35x | UKGC |
| Slingo casino | Slingo spins and free spins | Varies | UKGC |
| Party Poker | Free spins on casino side | 35x | UKGC |
| QuinnBet casino | Spins for new accounts | 35x | UKGC |
| Videoslots | Free spins on selected titles | Varies | UKGC / Malta |
| Donbet casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| Betano casino | Spin bundle | 35x | UKGC |
| 666 Casino | Free spins on registration | 40x | UKGC |
| Fat Pirate | Offshore, Curaçao licence | 40x+ | Curaçao |
| NineWin casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| NYSpins casino | Free spins bundle | 35x | UKGC / Malta |
| All British Casino | Spins on selected titles | 35x | UKGC / Malta |
| Mega Casino | Free spins for new players | 40x | UKGC |
| Lucky Pants casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| Parimatch casino | Spin bundle | 35x | UKGC / Curaçao |
| Mega Riches | Free spins on selected slots | 40x | UKGC |
| Rainbet | Offshore, Curaçao licence | 40x+ | Curaçao |
| Casino Kings | Spins on registration | 35x | UKGC |
| Duelz casino | Free spins bundle | 35x | UKGC / Malta |
| Voodoo Dreams | Spins on selected titles | 35x | UKGC / Malta |
| Velobet casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| Smarkets casino | Exchange-linked spins | Varies | UKGC |
| BetGoodwin casino | Free spins for new accounts | 35x | UKGC |
| Ivy Casino | Spin bundle | 35x | UKGC |
| 777 Casino | Free spins on selected slots | 40x | UKGC |
| SpinGenie casino | Spins on registration | 35x | UKGC |
| Dream Vegas | Free spins bundle | 35x | UKGC / Malta |
| Amazon Slots | Spin allocation | 35x | UKGC |
| PricedUp casino | Free spins for new players | 35x | UKGC |
| Rolletto casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| Sportingbet casino | Spin bundle | 35x | UKGC |
| Bet UK casino | Free spins on selected titles | 35x | UKGC |
| JackpotCity casino | Spins on registration | 35x | UKGC / Malta |
| DragonBet casino | Free spins bundle | 35x | UKGC |
| Betdaq casino | Exchange-linked spins | Varies | UKGC |
| 7bet casino | Spin allocation | 35x | UKGC |
| LeoVegas casino | Free spins bundle | 35x | UKGC / Malta |
| Kinghills casino | Spins on selected slots | 35x | UKGC |
| Magic Red casino | Free spins for new accounts | 35x | UKGC / Malta |
| The Pools casino | Spins plus pools entries | Varies | UKGC |
| Dream Jackpot casino | Free spins bundle | 35x | UKGC / Malta |
| Roobet casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| Hollywoodbets casino | Spin offer | 35x | UKGC |
| Mr.Play casino | Free spins on selected titles | 35x | UKGC / Malta |
| Magical Vegas casino | Spins on registration | 40x | UKGC |
| BetWright casino | Free spins bundle | 35x | UKGC |
| Prime Casino | Spins on selected slots | 35x | UKGC |
| Gamdom casino | Offshore, Curaçao licence | 40x+ | Curaçao |
| Pink Casino | Free spins for new players | 40x | UKGC |
Why do UK operators cap no deposit spins at 40?
Because the maths works. A 40-spin allocation at 10p is £4 of exposure. If 5,000 people register in a month, that is £20,000 in spin value alone, before any winnings are paid out. Add the cost of KYC checks, customer support and payment processing, and the acquisition cost per player lands in the £15 to £40 range. Anything larger stops making commercial sense.
Which operators run genuinely wager-free spins?
MrQ casino and PlayOJO casino are the two most consistent examples in the UK market. Their model pays winnings from free spins as cash, with no wagering requirement attached. The trade-off is a smaller headline allocation and, in some cases, a minimum deposit required before withdrawal. It is a different commercial structure, not a better one for everyone.
Wagering Requirements: The Part That Decides Whether You Win Anything
Wagering, or playthrough, is the number of times you must stake bonus-derived funds before they convert to withdrawable cash. A 35x requirement on £10 of bonus winnings means £350 of qualifying stakes. At a 10p spin, that is 3,500 spins. At £1 a spin, 350 spins. The same requirement can be trivial or brutal depending on stake size.
Game weighting complicates it further. Slots usually count 100% toward wagering. Table games often count 10% or 20%. Live dealer games frequently count zero. A player who wins £10 from 40 free spins and then plays blackjack to clear the requirement will find it takes ten times longer than the terms implied.
| Wagering Term | What It Means | Practical Impact on £10 Bonus |
|---|---|---|
| 0x | No playthrough | Withdraw immediately (subject to minimum) |
| 1x | Stake bonus once | £10 of qualifying play |
| 10x | Stake bonus ten times | £100 of qualifying play |
| 35x | Stake bonus 35 times | £350 of qualifying play |
| 40x | Stake bonus 40 times | £400 of qualifying play |
| 65x | Stake bonus 65 times | £650 of qualifying play |
What is the maximum win cap on free spins?
Most UK no deposit offers cap the total winnings you can withdraw from the bonus at somewhere between £20 and £100. A £50 cap is common. This matters because a lucky run on a high-variance slot can produce a £400 win that converts to £50 of real cash. The cap is disclosed in the terms, usually in the smallest text on the page.
How long do you have to use the spins?
Typically 7 days from registration, though 3 and 14-day windows exist. The spins expire, and any winnings sitting in the bonus balance expire with them, usually after 30 days. Diarise the expiry date the moment you register. Miss it and the entire bonus is void, no exceptions, no support override.
Do free spins winnings count toward deposit limits?
No. Deposit limits apply to funds you transfer in, not to bonus credit. This is a genuine gap in the responsible gambling framework that players should understand. A no deposit bonus can extend a session without touching your limit, which is why session timers and reality checks matter more than the deposit cap in that specific scenario.
How to Claim 40 Free Spins Without Wasting Your Time
The process is short. Register, verify, claim, play, and check the terms before you do any of it. The order matters because the terms determine whether the offer is worth claiming at all. A 40-spin offer with a 65x wagering requirement and a £20 win cap is worth less than a 20-spin offer with no wagering.
- Check the licence number on the operator's footer and confirm it on the Gambling Commission register.
- Read the full bonus terms before registering, specifically wagering, game weighting, win cap and expiry.
- Register with accurate details, since mismatched data will fail verification later.
- Complete identity verification when prompted, not when you try to withdraw.
- Set a deposit limit and a session timer before you claim the spins.
- Claim the spins within the stated window and note the expiry date.
- Play the assigned slots at minimum stake if you are clearing a wagering requirement.
What documents will you need for verification?
Usually a photo ID, proof of address dated within three months, and occasionally proof of payment method. UK rules require verification before withdrawal, and some operators now require it before deposit. Have the documents ready at registration and the process takes minutes rather than days.
Why do some free spins fail to credit?
Common causes: an existing account with the same operator group, a failed age or identity check, a VPN masking your location, or a payment method already linked to another account. Group-level restrictions catch more people than any other single reason. Ladbrokes and Coral share an owner, as do several other UK brands, so a previous account at one can block an offer at the other.
Free Spins vs Other No Deposit Bonus Formats
Free spins are not the only no deposit format, and they are not always the best. A cash bonus with no deposit gives you more flexibility but usually carries higher wagering. A bingo ticket offer suits a different audience. A free bet is a sportsbook product, not a casino one, though the mechanics of bonus credit are similar.
| Bonus Type | Typical Value | Wagering | Best For |
|---|---|---|---|
| 40 free spins | £4–£8 stake value | 30x–40x | Slot players testing a new site |
| No deposit cash | £5–£10 | 40x–65x | Players wanting game choice |
| Free bingo tickets | £5–£15 equivalent | Varies | Bingo players |
| Free bet | £5–£30 | 1x–5x | Sports bettors |
| Deposit match | 100% up to £100 | 30x–40x | Players funding an account |
Are free spins better than a no deposit cash bonus?
Depends on the game you want to play. Free spins lock you to specific slots, which is a constraint. Cash lets you choose, but the wagering is usually higher. For a player who wants to try a named title like Big Bass Bonanza or Starburst, the spin offer is cleaner. For a player who wants table games, cash is the only workable option.
Can you withdraw free spins winnings without depositing?
Yes, if the operator permits it and you meet the wagering requirement. Some UK sites require a minimum deposit before any withdrawal, which effectively converts the no deposit offer into a deposit offer. Check that specific term before claiming. It is the single most common source of complaints about no deposit bonuses.
Game Providers and Slot Selection Behind the Spins
The value of 40 free spins depends heavily on which game they are assigned to. A Pragmatic Play title like Gates of Olympus has a different variance profile to a NetEnt staple like Starburst. High-variance games can produce large wins from 40 spins, but they can also produce nothing. Low-variance games produce small, frequent returns and clear wagering more predictably.
Operators choose the assigned game for a reason. It is usually a title with a healthy house edge and a wagering contribution of 100%. That is not a scam, it is commercial logic. Understanding it lets you decide whether the offer suits your play style before you claim it.
Which providers appear most in UK free spin offers?
Pragmatic Play, NetEnt, Microgaming, Play'n GO, Red Tiger and Hacksaw Gaming dominate. Evolution covers live dealer, though live games rarely qualify for spin bonuses. Big Time Gaming titles appear less often because their high volatility makes wagering unpredictable for the operator as well as the player.
Does the assigned slot affect wagering speed?
Yes, materially. A low-variance slot at 10p a spin clears £350 of wagering in 3,500 spins, which at 800 spins per hour takes around 4.5 hours. A high-variance slot at the same stake clears the same amount in the same number of spins but with far more variance in outcome. The time is identical; the risk profile is not.
Frequently Asked Questions
Is 40 free spins no deposit a real offer in the UK?
Yes, though the allocation is usually smaller than offshore equivalents and the terms are stricter. UK-licensed operators must disclose wagering, win caps and expiry clearly. If a site offers 40 free spins with no terms visible, treat it as a red flag and check the licence before registering.
Can you win real money from 40 free spins?
You can win real money, but the amount is capped and subject to wagering. A typical structure is a £50 maximum win cap and 35x wagering on the resulting bonus. In practice, most players convert a small fraction of any headline win into withdrawable cash. The offer is a trial, not a payday.
Do you need to deposit to withdraw free spins winnings?
Some operators require a minimum deposit, usually £10, before any withdrawal, even from a no deposit bonus. Others do not. This term is buried in the bonus conditions, so check it before claiming. If a deposit is required, the offer is effectively a deposit bonus with extra steps.
How long does it take to clear 40 free spins wagering?
At 10p a spin and 35x wagering on a £10 bonus, you need £350 of qualifying stakes, which is 3,500 spins. At roughly 800 spins per hour on a standard slot, that is around 4.5 hours of continuous play. Most players clear it over several sessions within the 30-day bonus window.
What happens you leave the spins unused until they expire?
They vanish, along with any winnings attached to them. Spin expiry typically sits at 7 days from registration, and the bonus balance itself usually lapses after 30 days. There is no grace period and no support override, because the expiry is written into the licence-approved terms rather than set at the agent's discretion.
Can you claim 40 free spins if you already hold an account?
No. No deposit offers are strictly for new customers, and the check runs at group level rather than brand level. Ladbrokes and Coral sit under the same owner, as do several other UK pairs, so a dormant account at one can disqualify you at the other. Closing an old account does not reset the flag either.
Do free spins trigger a credit check?
Not a full credit search, but age and identity verification does query reference data. Operators must confirm you are 18 or over before allowing play, and they check name, address and date of birth against electoral roll and identity databases. A mismatch between your registration details and those records is the most common reason a bonus fails to credit.
The Compliance Layer Nobody Talks About
Behind every free spin sits a monitoring system that most players never see. UK-licensed operators must run automated checks for markers of harm: escalating deposit frequency, session length creeping past the three-hour mark, repeated failed deposit attempts, and cancelled withdrawals. These signals feed into a risk score that determines whether an operator intervenes.
Intervention takes several forms. A pop-up offering a deposit limit. A mandatory reality check. A call from the safer gambling team. In the most serious cases, an account restriction applied without consent. The Gambling Commission's 2023 guidance on customer interaction made these checks a formal requirement rather than a best-practice suggestion.
How does a session timer differ from a reality check?
A session timer is a countdown you set yourself, typically 30, 60 or 120 minutes. A reality check is a system-generated interruption that shows your net position over a rolling period. The timer is preventative; the check is diagnostic. Both are configurable through the account settings, and both are required to be available under licence conditions.
What triggers an automatic account restriction?
Several patterns can. A sudden jump in average stake, deposits made within minutes of each other, a string of declined card payments, or gambling activity between 1am and 5am sustained across multiple nights. None of these is a single red flag on its own. The system looks at clusters, not isolated events, which is why a one-off late session rarely causes problems.
Can an operator refuse to pay winnings from free spins?
Yes, in defined circumstances. Breaching bonus terms, using a VPN to mask location, or holding a duplicate account gives an operator grounds to void winnings. What they cannot do is void winnings arbitrarily. UK rules require terms to be clear, fair and not misleading, and the Commission has fined operators for applying vague conditions retroactively.
How long does a withdrawal take after clearing wagering?
Between one and five working days for most methods. E-wallets like PayPal and Skrill usually settle within 24 hours, debit cards take one to three working days, and bank transfers can take up to five. Some operators batch withdrawals daily, which adds a day. Verification must be complete before the request is processed at all.
Common Mistakes That Void the Bonus
Most voided bonuses come down to three things: staking above the maximum allowed while clearing wagering, playing a restricted game, or cashing out before the requirement is met. The maximum stake rule catches more players than the other two combined, because the cap is often £5 or even £2 per spin and it is easy to exceed without noticing.
Restricted games are the second trap. A bonus credited for slots may exclude table games entirely, or count them at 10% toward wagering. A player who switches to roulette after a losing run on slots can find that the session contributes almost nothing to the requirement, extending the playthrough dramatically.
What is the maximum stake while clearing a bonus?
Usually £5 per spin or bet, though £2 caps exist on some offers. Exceed it and the operator can void the bonus and any winnings. This rule exists to stop players chasing a large win on a single high-stake spin using bonus funds. Check the cap before you increase your stake.
Do free spins expire if you do not log in?
Yes. Expiry runs on the calendar, not on activity. A 7-day window closes 7 days after registration whether you logged in once or fifty times. The only reliable approach is to claim the spins and check the terms on the same day, then diarise the deadline before you forget about it.
Can you hold free spins at multiple operators at once?
Yes, and there is no rule against it. Each operator runs its own checks, and a no deposit offer at one brand does not affect eligibility at another, provided the brands are not under common ownership. Running three or four offers simultaneously is legal and common among players testing the market.
Is a 40 Free Spins No Deposit Offer Worth Claiming?
For a player who wants to test a new site without risk, yes. The downside is capped at zero, and the upside is a small but real chance of a withdrawable win. The cost is your data, roughly ten minutes of registration and verification, and the mental discipline to read the terms first.
For a player who wants meaningful value, the offer is thin. Forty spins at 10p is £4 of stake, and a 35x wagering requirement on the resulting bonus is a substantial clearing job for a modest return. Deposit match offers, despite requiring your own money, usually deliver more usable value per pound of effort.
The honest summary: claim it if you were going to try the site anyway. Skip it if the only reason you are registering is the spins. And whatever you do, set a deposit limit and a session timer before you claim, because the bonus will not do that for you.