21 Casino is one of the few brands in this comparison where the licensing question has a short answer, so it is worth putting first. After that come the terms attached to the welcome offer, the lobby behind it, and two sister brands built on very different bonus mathematics.

Operator, Licence and Player Protection — what the register shows

The site states that 21 Casino has operated since 2015 and holds a UK Gambling Commission licence, number 52894. That number is checkable, and it resolves: the Commission’s public business register returns account 52894 under White Hat Gaming Limited, and names www.21casino.com as a licensed domain for the brand.

Worth being precise about what that covers. The register entry attaches to the operator and to the brand’s official domain, not to every page that writes about the casino — this review sits on a separate address.

That single fact changes what the rest of the page means. A UK licence places the operator under the Gambling Commission’s rules for the British market, including requirements around age verification, safer gambling and customer protection — and the site names its own versions of them: verification at 18, identity checks before money leaves the account, deposit limits and self-exclusion in the account settings.

GAMSTOP is the one worth understanding before signing up anywhere. It is the national multi-operator self-exclusion scheme, and it applies across participating UK-licensed operators, not to a single casino account.

Account area	What is published
Operator and licence	White Hat Gaming Limited, UK Gambling Commission account 52894; the register lists www.21casino.com against it
Age and verification	18+; photo ID, proof of address and payment proof, usually requested before the first withdrawal
Responsible gambling	Deposit limits and self-exclusion in account settings, plus GAMSTOP registration; BeGambleAware and GamCare named
Withdrawals	Minimum £10; monthly limit £50,000; 24–48 hours by e-wallet, 3–5 business days by debit card
Payments	PayPal, Visa Debit, Mastercard Debit, Skrill, Neteller, Paysafecard, bank transfer and Apple Pay
Eligibility	Geo-restrictions apply; the site directs readers to the terms to confirm their location qualifies

The withdrawal row is worth holding onto for the comparison later. The £10 withdrawal minimum matches the minimum deposit, the monthly ceiling is £50,000, and the timings are given as figures: one to two days by e-wallet, three to five by card.

What Stands Out About the Brand — 21 Casino as an account, not a headline

The offer is short enough to explain in a line, and the lobby behind it is deep enough that the site does not read as a bonus with a casino attached. The useful comparison is not which welcome percentage is biggest, but whether the account supports the kind of play UK users repeat: mobile slots, a quick live table, deposits in pounds and a bonus window that does not force the pace.

Feature	What the site publishes
Operating since	2015
Game range	5,000+ games across slots, jackpots, table games and live casino
Providers	NetEnt, Evolution, Pragmatic Play, Microgaming, Play’n GO, Red Tiger, Big Time Gaming and Blueprint
Named titles	Book of Dead, Big Bass Splash, Starburst, Gates of Olympus, Bonanza Megaways and Gonzo’s Quest
Mobile	The spec table gives the mobile platform as “native app + web browser”; no app-store link is published on the page
Money movement	Accounts in pounds, with PayPal, cards, Skrill, Neteller, Paysafecard, Apple Pay and bank transfer

The studio list runs through the names most UK players already recognise, and the named titles are the ones that turn up on any shortlist a returning player builds. Book of Dead matters twice over: it is both a lobby staple here and the game the welcome spins land on.

Welcome Bonus Reality Check — what maxing the £500 match costs

The offer is a 100% match up to £500 plus 70 free spins, at 35x on bonus funds, with a £10 minimum deposit, a 30-day window and a £5 cap on bets while bonus funds are live. The spins run on Book of Dead, and their winnings carry the same 35x. No promo code is listed for the offer.

The headline is a ceiling, and reaching it has a price. Because the match is 100%, the full £500 in bonus funds requires a qualifying deposit of £500 — the two move together, unlike a staged package where the ratio worsens with each step. At 35x, that £500 in bonus funds then carries £17,500 of wagering to satisfy the requirement, with the free-spin winnings wagered separately on top.

Term	Figure
Match	100% up to £500
Deposit needed to max it	£500
Wagering on a maxed bonus	35x × £500 = £17,500
Minimum deposit	£10
Bonus window	30 days
Maximum bet on bonus funds	£5
Free spins	70 on Book of Dead, winnings at 35x

A £10 deposit sits at the other end of the same rules: £10 in bonus funds, £350 of wagering, the same 30 days. The proportions hold whatever the size, which is what makes a flat percentage match easier to price than a ladder.

Bonus Rules to Check Before Depositing

These are the published terms that decide what the offer is worth, gathered in one place:

• Minimum qualifying deposit: £10.
• Wagering: 35x on bonus funds, and 35x on winnings from the free spins.
• Bonus window: 30 days.
• Maximum bet while bonus funds are active: £5.
• Free spins: 70, on Book of Dead.
• No promo code is listed for this offer.

Games, Mobile and Account Flow

The lobby gives enough choice for both low-stakes browsing and higher-volatility slot testing, with the strongest depth on the slot side; live casino and table games sit alongside as variety.

Area	What the site offers
Slots	The deepest category, with Megaways, book slots and feature-buy formats named
Live casino	Evolution-led tables covering roulette, blackjack and game-show formats
Mobile	Listed by the site as native app plus mobile browser play
Payments	A £10 floor on both deposits and withdrawals

The £10 floor on withdrawals sits at the same level as the deposit minimum — a balance below that stays in the account until it is topped up or played through.

How to Register an Account

1. Open the registration form from the main casino entry point.
2. Enter name, date of birth, address and email exactly as they appear on ID documents — the operator checks these against the documents before a withdrawal moves.
3. Choose pounds as the account currency where the flow offers a choice.
4. Set a password and complete the email confirmation step.
5. Have photo ID, proof of address and payment proof ready; the site places that check before the first withdrawal.

How to Deposit and Claim the Bonus

1. Open the cashier before choosing a game.
2. Select a payment method eligible for the welcome offer.
3. Deposit at least the £10 minimum. Nothing needs typing into a code field — no code is listed for this offer.
4. Confirm the bonus balance and free spins are showing before the first spin.
5. Keep every stake at or under £5 while bonus funds or free-spin winnings are in play.

Sister Sites for 21 Casino — the same headline logic, very different terms

The two sister brands are useful because they are built on opposite bonus mathematics, and neither resembles the flat match above. One keeps wagering almost nominal and the match percentages small; the other does the reverse. Their caps are published in different currencies, so what compares cleanly is the mechanism — how much has to be deposited, and how much has to be turned over — rather than the headline figures side by side.

Agent No Wager

Agent No Wager has run since 2020 under a Curaçao eGaming licence, with Bitcoin, Ethereum and Tether alongside cards. Its welcome route is three deposits building to €850 in bonus value at 1x wagering — the lightest playthrough of the three brands here by a wide margin.

Deposit step	Offer	Wagering	Deposit needed to max the step
First	10% up to €50	1x	€500
Second	12% up to €300	1x	€2,500
Third	15% up to €500	1x	€3,333.34

The three caps add to the €850 the site advertises. The percentages are what make the package unusual: at 10% to 15%, collecting the full €850 takes €6,333.34 of deposits across the three stages. The 1x wagering is genuine, and it is doing a different job from a 35x requirement — the constraint here sits on how much goes in, not on how much has to be turned over. Minimum deposit is €10.

Amigo Wins

Amigo Wins launched in 2022, is linked on its own pages to Cerberlot N.V., and runs the opposite structure: 150%, 175% and 200% across the first three deposits, adding to the 525% headline, all at 35x.

Deposit step	Match	Wagering	Entry
First	150%	35x	Cards from £40; crypto routes from £10 to £20
Second	175%	35x	Same welcome run
Third	200%	35x	Final and largest percentage

Cashout timing is published: 0 to 24 hours on crypto, 24 to 72 hours on cards. On the bonus itself the percentages are the only figures the pages put forward, so 525% describes the shape of the run and not a sum.

How the Three Casinos Compare

The three sit at different points of the same trade-off. 21 Casino pairs a modest, flat 100% match with a heavy 35x: £500 in, £500 of bonus, £17,500 to turn over. Agent No Wager inverts it — 1x wagering, but percentages of 10% to 15%, so the €850 headline takes €6,333.34 of deposits to reach. Amigo Wins takes the third corner: percentages up to 200% and a 525% headline, back at 35x, with the percentages standing in for any figure in money.

One of the three is licensed in the UK and the other two are not. 21 Casino resolves to White Hat Gaming Limited on Gambling Commission account 52894. Agent No Wager names a Curaçao eGaming licence and Amigo Wins names Cerberlot N.V.; neither publishes a UKGC licence number, and neither returns an entry in the Commission’s register — searched on 27 August 2026 by brand name, operator name and domain. For a reader in the UK that difference sits above any comparison of percentages.

FAQ

Is 21 Casino licensed in the UK?

The UKGC register lists White Hat Gaming Limited under account 52894 and names www.21casino.com as a licensed domain for the brand. The licence attaches to the operator and that official domain.

What is the main 21 Casino welcome offer?

A 100% match up to £500 plus 70 free spins on Book of Dead, at 35x wagering, with a £10 minimum deposit, a 30-day window and a £5 maximum bet on bonus funds.

How much wagering does the full £500 bonus carry?

Maxing the match takes a £500 qualifying deposit, and 35x on £500 of bonus funds is £17,500 of wagering. Free-spin winnings carry their own 35x on top.

Is there a promo code for the 21 Casino bonus?

No promo code is listed for the welcome offer.

How do the sister brands differ on wagering?

Agent No Wager runs 1x wagering with match percentages of 10% to 15%. Amigo Wins runs 35x with percentages from 150% to 200%. The requirement and the match move in opposite directions.