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⚽ Widest sports coupon of the three, football to GAA hurling
🏆 Supercharge boosts odds across the whole coupon
👥 Who shares the account with kwiff
Two names share the licence kwiff trades on, and both are casino only rather than sportsbooks.
One licensed company stands behind all three sites, holding them to the same rulebook and the same tier of balance cover, whichever address a player opens first.
📋 The only trading name on the licence
kwiff is the only trading name filed on the account, covering the sportsbook and its casino together. GRP Casino and SlotsKing are not trading names at all; both are filed only as domain names, a different column doing a different job, which is why searching by either name alone turns up nothing.
Seven addresses sit on the file in total, though only three lead to a working casino. kwiff.co.uk does not resolve to anything, not even a closed-down notice, and kwiffcasino.com simply forwards on to casino.kwiff.com, a fourth address that is not itself on the file. The remaining two entries are app store listings for the kwiff app. The full address-by-address breakdown sits on the licence page, linked below.
🔑 What kwiff can do that its sisters cannot
📌 The four permissions on this licence
- Gambling software, remote, since March 2016 - the platform behind all three brands
- Betting on real events, remote, since March 2016 - used by kwiff only
- Casino, remote, since December 2016 - used by all three brands
- Betting on virtual events, remote, since February 2023 - used by kwiff only
Read in order, those dates describe a company that started as a bookmaker, added a casino nine months later, and only added simulated-event betting more than six years after that. It is also the sourced reason GRP Casino and SlotsKing cannot take a sports bet at all: the licence itself does not extend that permission to them. No premises permission sits on the account, and none is available under a licence of this kind.
🔥 Built around Supercharge
The mechanic behind kwiff is called Supercharge, a boost applied across the coupon rather than tucked into one corner of it. The betting menu runs from football, horse racing, tennis and cricket through to greyhounds, basketball, darts, snooker, golf, rugby, boxing, mixed martial arts, motor racing, baseball, ice hockey, volleyball and both codes of Gaelic games. An in-play tab covers live betting, and a virtuals tab covers simulated events, the permission that only arrived in February 2023. kwiff runs its casino from a different address altogether, casino.kwiff.com, reached only through a redirect from kwiffcasino.com rather than a link off the sportsbook front page.
⚠ The fine the account page does not show
Check this operator by opening its own summary page on the regulator website and the enforcement counter reads zero. That page is not the whole record. A separate part of the same Gambling Commission site records every operator it has actually punished, and this one appears there. On 8 December 2022 an operating licence review closed with a formal warning, an added condition requiring a third-party audit within twelve months, and a financial penalty of £480,305. The breaches found were weak anti-money-laundering checks and poor handling of customers showing signs of gambling harm. The finding is recorded against the company itself, not against a single brand, which puts it behind kwiff and both of its sisters equally.
🏢 Who is actually answerable
The small print at the foot of the site names two companies. Kwiff Limited, based in Malta, runs the site day to day, and the same sentence names it as an authorised agent operating under what it calls an umbrella arrangement held by its parent. That parent is Eaton Gate Gaming Limited, the company holding the British licence and the one answerable if a complaint escalates past the site itself. A third name, Spryme Limited, turns up in the copyright line on GRP Casino and SlotsKing but not on the kwiff site itself, and does not appear anywhere in the regulator own records for this account.
One number is worth keeping straight without printing it: the account number quoted in the footers is not the same string as the licence number itself, and treating the two as interchangeable is a mistake several guides have made.
- ✅ Safe: checking the account behind kwiff rather than the brand name alone, since GRP Casino and SlotsKing are filed only as addresses and would not show up in a name search.
- ❌ Costly: reading the zero on the account own enforcement counter as a clean record. A separate part of the same file tells a different story.
🔗 Reading on
Every address on the file, and the full account of the December 2022 sanction, is written up once rather than spread across three pages. GRP Casino and SlotsKing each carry their own write-up too, with the games, cashier and lobby detail specific to that brand.
All seven addresses, the four permissions and the full December 2022 sanction, covered once rather than three times over
See Kwiff on the sportsbook sister sites index.