18+

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Spin ProspectorUK casino comparison

Independent · affiliate-funded · 18+

Five UK casino sites, graded on the game studios behind them rather than the size of the sign-up offer.

Most comparison pages sort casinos by whichever welcome offer looks largest that week. We start somewhere less flattering to the operators: who actually supplies the games. A lobby carrying Nolimit City, Push Gaming and Big Time Gaming plays very differently to one running a few hundred slots from two suppliers, and that gap is still there long after a bonus has been used up.

Spin Prospector is a comparison site, not a casino. We don't run games, hold player accounts or take any part in play — we read the lobbies, check the licence register and write down what we find. Everything on the site is written for over-18s, and the responsible gambling page is worth a look before you open an account anywhere.

Last updated 29 July 2026 Five operators graded 18+ only

How we compare operators

Eight checks, run in the same order on every site.

Nothing here is scored by feel. Each operator goes through an identical pass, and the letter grade on its card is a summary of those eight lines rather than a separate opinion tacked on at the end.

  1. 01Gambling Commission licenceConfirmed against the public register by trading name before a single other line gets written.
  2. 02Game rangeHow many titles are genuinely in the lobby, and whether the count is padded out with near-identical versions of the same slot.
  3. 03Studios featuredWhich suppliers are actually in there. Coverage matters more to us than a headline number, because it decides what you can play.
  4. 04Live casinoWho runs the tables, how many are open at a quiet hour, and whether there is anything past standard blackjack and roulette.
  5. 05Mobile and appsNative apps on both platforms or a browser build only, and how the lobby behaves on a phone-sized screen.
  6. 06Welcome offer typeThe shape of the new-player promotion — match, spins, or both. We record the type rather than a figure, because figures move.
  7. 07Customer supportWhich channels are open, and whether the help centre answers anything or simply routes you back to live chat.
  8. 08UsabilitySearch, filters and studio tags. This is where a catalogue of several thousand games either works or falls apart.
Three slot reels showing card-suit symbols beside a stack of casino chips.
Two lobbies can advertise a similar slot count and still share barely a dozen suppliers between them. Supplier coverage is the line we weight hardest.

Where the money comes from

Affiliate commission funds this site, which is the awkward part of any page like this one. Two things keep it straight: grades and card order are settled before the commercial side sees them, and the criteria above are published so you can disagree with the weighting. Full detail sits on the affiliate disclosure page.

The five sites

What each lobby actually gives you to play.

Grades run A to D and describe the whole eight-line pass, weighted towards supplier coverage. A C is not a warning — it means a narrower catalogue than the others here, which suits some people perfectly well.

Affiliate disclosure. The links marked “Visit” are tracked. Open an account through one and the operator pays us a commission; you pay nothing extra and land on the operator's standard offer. That commission is what funds the site.

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CasumoCasino-first · live by Evolution

Casumo launched in 2012 and still runs the level-and-trophy progression that made its name, but the reason it grades well here is the supplier list: NetEnt, Play'n GO, Red Tiger, Pragmatic Play and Nolimit City sit in one lobby, which is unusual breadth for a brand with no sportsbook to lean on.

Wide studio spread Evolution live rooms Casino-only brand
Studios
NetEnt, Play'n GO, Red Tiger, Pragmatic Play, Nolimit City
Live
Evolution, with Pragmatic Play Live alongside it
Mobile
iOS and Android apps
Grade A
of A–D
Welcome offer type
Deposit match with bonus spins
Visit Casumo See its criteria row

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kwiffApp-first · sportsbook heritage

The casino here is bolted onto a sportsbook, and that shows in the best way: kwiff was built app-first, so the phone version is the proper product rather than a shrunken desktop site. The slot list is shorter than the big catalogues, with Pragmatic Play, Play'n GO, Hacksaw and Red Tiger covering most of it.

App-first build Shorter slot list Sports and casino in one
Studios
Pragmatic Play, Play'n GO, Hacksaw Gaming, Red Tiger
Live
Evolution tables
Mobile
iOS and Android apps, designed phone-first
Grade B
of A–D
Welcome offer type
Bonus spins on selected slots
Visit kwiff See its criteria row

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Paddy PowerFlutter group · trading since 1988

Owned by Flutter and in business since 1988, Paddy Power has the deepest pockets on this list and spends them on exclusive titles and its own branded live rooms. The catalogue is split across separate Casino, Vegas and Games sections — thorough or scattered depending on your patience — with Playtech, Blueprint, Pragmatic Play and Games Global spread between them.

Own-branded live rooms Exclusive titles Lobby split three ways
Studios
Playtech, Blueprint, Pragmatic Play, Games Global, in-house
Live
Evolution, including Paddy-branded tables
Mobile
iOS and Android, shared with the sportsbook
Grade B
of A–D
Welcome offer type
Bonus spins for new casino players
Visit Paddy Power See its criteria row

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Ken HowellsIndependent bookmaker · compact lobby

This is the small independent of the group — a British bookmaking name with a casino attached rather than a casino-first operation, running on a third-party platform. Expect a curated few hundred slots from mainstream suppliers and a handful of live tables, which is fine if a shorter list suits you and limiting if it doesn't.

Independent name Compact catalogue Sports-led
Studios
Mainstream slot suppliers via its platform provider
Live
A small set of standard tables
Mobile
Mobile web, no separate app
Grade C
of A–D
Welcome offer type
New-player casino bonus
Visit Ken Howells See its criteria row

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NetBetDeepest catalogue · strong filters

Breadth is the whole argument for NetBet. The slot list runs into the thousands and, more usefully, reaches into studios the bigger brands often skip — Nolimit City, Push Gaming, Relax Gaming and Hacksaw sit next to the NetEnt and Play'n GO staples, and the filters are good enough that the size never becomes a problem.

Deepest slot list here Niche studios included Filters that work
Studios
NetEnt, Play'n GO, Nolimit City, Push Gaming, Relax Gaming, Hacksaw
Live
Evolution, across tables and game shows
Mobile
Mobile web, well optimised
Grade A
of A–D
Welcome offer type
Deposit match with bonus spins
Visit NetBet See its criteria row

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The eight lines, side by side

Same questions, five answers each.

Read down a column for one operator, or across a row to see how the five compare on a single point. On a narrow screen the table scrolls sideways.

Eight comparison criteria checked on Casumo, kwiff, Paddy Power, Ken Howells and NetBet
Criterion Casumo kwiff Paddy Power Ken Howells NetBet
UKGC licence Yes · Malta-based operator Yes · UK-based operator Yes · Flutter group Yes · UK bookmaker Yes · NetBet group
Game range Large — a few thousand slots Moderate — curated, not exhaustive Very large, split across three lobbies Small — a few hundred titles Very large — the deepest list here
Studios featured NetEnt, Play'n GO, Red Tiger, Pragmatic Play, Nolimit City Pragmatic Play, Play'n GO, Hacksaw, Red Tiger Playtech, Blueprint, Pragmatic Play, Games Global, in-house Mainstream suppliers via its platform provider NetEnt, Play'n GO, Nolimit City, Push Gaming, Relax Gaming, Hacksaw
Live casino Evolution plus Pragmatic Play Live Evolution tables Evolution, including branded rooms A small set of standard tables Evolution, tables and game shows
Mobile and apps iOS and Android apps iOS and Android, app-first design iOS and Android, shared with the sportsbook Mobile web only Mobile web, well optimised
Welcome offer type Deposit match with bonus spins Bonus spins on selected slots Bonus spins for new casino players New-player casino bonus Deposit match with bonus spins
Customer support Live chat and email In-app live chat and email Live chat plus a large help centre Email and contact form Live chat and email
Usability Clear lobby; the level system is the hook Excellent on a phone, plainer on desktop Busy, but well signposted Quick to navigate, because there is less in it Filters keep a big catalogue manageable
Overall grade A B B C A

Licence status is the one row where everyone looks the same, and that is the point — a British-facing casino without a Gambling Commission licence never reaches this page. Offer types are recorded as types rather than amounts, because the numbers change faster than we can re-check them; read the current terms on the operator's own site.

Picks by category

Nobody wins on every line, so here they are split up.

One overall grade flattens a lot of detail. These four groupings put the same five operators in the order that makes sense for a specific thing you might care about.

Best for studio breadth

The count of games matters far less than how many different studios made them. Suppliers each have their own house style — volatility, bonus-buy mechanics, how a feature is triggered — so a narrow supplier list means a narrow range of experiences however many titles are on the shelf.

  • NetBetReaches into Nolimit City, Push Gaming and Relax Gaming, which is rare outside specialist casinos.
  • CasumoFewer titles overall, but every supplier you would expect to find is present.

Best for live-dealer rooms

Almost every UK casino buys its live tables from the same place, so the difference comes down to how many rooms an operator has bought and whether it has paid for anything of its own. Table minimums and how busy the floor is at 2am matter more here than the supplier's name.

  • Paddy PowerEvolution tables plus its own branded rooms, so there is somewhere to go at a quiet hour.
  • CasumoTwo live suppliers rather than one, which doubles the number of open tables.

Best on a phone

Most casino traffic is on mobile, and it shows in how differently these sites treat it. An app built as the primary product behaves nothing like a desktop lobby squeezed into a narrow viewport, particularly when you are searching a catalogue of a few thousand games.

  • kwiffBuilt app-first; the phone build is the real product, not a cut-down copy.
  • Paddy PowerOne app covering casino and sportsbook, so there is no second login to keep track of.

Best if a shorter list suits you

Not everyone wants four thousand slots. A smaller lobby is quicker to learn, easier to search and less likely to leave you scrolling instead of playing — and a smaller operator is often easier to reach when you need to ask something.

  • Ken HowellsA few hundred titles rather than a few thousand, with a sportsbook alongside.
  • kwiffCurated rather than exhaustive, with the mainstream studios still covered.
Overhead view of a live casino table with a roulette wheel, two playing cards and a row of chips.
Live rooms are the clearest example of shared supply: several of these operators are streaming from the same studios.

Why supplier overlap matters when you compare

Evolution supplies live tables to most licensed UK casinos, which means the dealer, the wheel and the rules are frequently identical whichever of these sites you open. That overlap is worth knowing before a marketing page convinces you a particular brand has something exclusive at the roulette table.

The real differences sit either side of it. On one side, how many rooms an operator has licensed and whether any are dedicated to its own players. On the other, the slot catalogue, where supplier choice varies enormously and one operator genuinely can offer something another cannot.

How the licence conditions shape all of this

Independent help

Four organisations worth knowing about.

None of these are connected to us or to the operators above. All four are free to use, and the first one is where you should check any casino before you sign up to it.

Gambling Commission Britain's regulator. Its public register shows whether a site is licensed to take your money, and what that licence covers. Check the register GAMSTOP Free self-exclusion that applies across every online operator licensed in Britain. One registration covers all of them. Register to self-exclude GamCare Confidential support and treatment, and the National Gambling Helpline on 0808 8020 133, open around the clock. Talk to someone GambleAware Independent advice, a short self-assessment you can take in a few minutes, and a directory of local support services. Read the advice

Questions we get asked

Two misreadings, then three practical answers.

The first pair come up constantly in emails, usually phrased as if they were established fact. The three below them are the questions that actually change what you do next.

Commonly believed

“A slot that hasn't paid out in a while is due a win.”

Not soEvery spin is produced independently by a random number generator with no memory of what came before it. A game's return-to-player figure is a long-run average measured across millions of spins, not a debt the machine slowly builds up. A title behaves exactly the same whether it paid out ten seconds ago or has been cold all evening.

Commonly believed

“The same game gives better odds at a bigger casino.”

Not soThe maths sits in the game build, not in the operator's servers. The one caveat worth knowing is that some studios ship a title in more than one RTP configuration, so check the figure in the game's own info panel rather than assuming. What a larger casino genuinely buys you is choice — more studios, more titles, more live tables.

How do I check a site is actually licensed here?

Search the trading name on the Gambling Commission's public register at gamblingcommission.gov.uk. You get the licensee's legal name, the licence status and what it covers. Then compare it with the licence number printed in the site's own footer — the two should match.

If a site accepts UK players and isn't on that register, none of the protections that follow apply to it: no GamStop, no mandatory deposit tools, no complaints route to an approved ADR provider.

What does GamStop actually block?

Registering blocks you from every online operator licensed by the Gambling Commission, which includes all five on this page. You pick six months, one year or five years, and once it starts it can't be shortened — the period has to run its course.

It doesn't reach betting shops, land-based casinos or sites operating without a British licence. That's why it works best paired with the operator's own deposit and time limits, plus a bank-level gambling block if your bank offers one.

Does clicking your links cost me anything or change what I'm shown?

No to both. The operator pays us if you go on to open an account, you pay exactly what anyone arriving directly would, and the promotion you land on is that operator's standard public offer.

The thing worth being sceptical about on any affiliate site is the ranking rather than the price. That's why the eight criteria are published in full above, and why the write-ups say plainly where an operator falls short.

Spin Prospector is an independent comparison site funded by affiliate commission. We are not a gambling operator, not part of the Gambling Commission, and not owned by or affiliated with any brand listed here. We don't run games, hold accounts, handle any part of play, or deal with operator complaints — those go to the operator itself and, if they stay unresolved, to its approved ADR provider.

Gambling is entertainment that costs money, not a way to make it. The odds favour the operator over time. Decide what you are willing to lose before you start, and stop at that point. 18+ only. If gambling is causing you harm, call the National Gambling Helpline free on 0808 8020 133 or visit BeGambleAware.org.

Offer types on this page describe the shape of each operator's new-player promotion, not a guaranteed amount. Eligibility, wagering requirements and expiry are set by the operator and can change without notice — always read the current terms on the operator's own site before signing up.