Kwiff sister sites

You can assess Kwiff alternatives on account conditions without assuming similar betting features come from the same business or owner. Establish who operates the casino before judging any offer.

Kwiff is a UK-licensed sportsbook and casino operated by Eaton Gate Gaming Limited. It holds a UKGC licence under account 44448. Evidence confirms one true sister site — GRP Casino — under the same operator licence. This guide covers that confirmed brand and a curated selection of comparable UK-licensed alternatives for players seeking similar experiences.

Operated by Eaton Gate Gaming Limited (parent company); Kwiff Limited (operating agent) · Last reviewed: 2026-08-01

Kwiff is a UK-licensed sportsbook and casino operated by Eaton Gate Gaming Limited. It holds a UKGC licence under account 44448. Evidence confirms one true sister site — GRP Casino — under the same operator licence. This guide covers that confirmed brand and a curated selection of comparable UK-licensed alternatives for players seeking similar experiences.

Confirmed Kwiff sister sites and related brands

Site NameLicenceVisit
BoyleSports Dual Visit BoyleSports
GRP Casino UKGC Visit GRP Casino
Betfred UKGC Visit Betfred
10bet UKGC Visit 10bet
Unibet UKGC Visit Unibet

How We Identify Sister Sites

We identified the operator behind Kwiff by cross-referencing multiple independent review platforms (including GamCheck, SisterSitesGuru, TheSisterSite, BettingLounge, Racing Post, and Football Ground Guide), all of which confirm Eaton Gate Gaming Limited as the parent operator and UKGC account 44448 as the relevant licence. We then searched specifically for other brands operating under the same Eaton Gate Gaming UKGC licence. Multiple independent sources, including thesistersite.co.uk and sistersitesguru.co.uk, confirm GRP Casino (grpcasino.com) as the only currently active brand sharing account 44448 with Kwiff, making it the sole true sister site. Alternative sites were included based on consistent citation by UK comparison platforms as comparable experiences for Kwiff users. No licence numbers were stated without primary-source verification. The £588,000 UKGC regulatory fine issued in 2022 was noted in evidence.

All casinos listed on SisterIndex are presented for informational purposes. If you choose to gamble, do so responsibly.

About the author

Jonathan Ridehalgh, Senior Casino Analyst at SisterIndex. Checks operator names, brand links and account wording so sister-site claims stay grounded.

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Frequently asked questions

Does Kwiff have any official sister sites?

Yes, but only one. GRP Casino (grpcasino.com) is the sole confirmed sister site of Kwiff as of mid-2026. It operates under the same Eaton Gate Gaming Limited UKGC licence account (44448) and is a casino-only brand. Several other sites are sometimes listed as Kwiff sister sites by third-party pages, but those brands are operated by entirely different companies and are more accurately described as alternatives rather than true sister sites.

Who owns and operates Kwiff?

Kwiff is operated by Kwiff Limited, which is a wholly-owned subsidiary of Eaton Gate Gaming Limited. The UKGC licence sits with Eaton Gate Gaming under account number 44448, with Kwiff Limited acting as the named agent authorised to provide gambling facilities under that licence. Kwiff Limited's registered office is located in Malta. Eaton Gate Gaming Limited is registered in England and Wales.

Is Kwiff safe to use and is it licensed in the UK?

Yes. Kwiff holds a full licence from the UK Gambling Commission under account 44448, which covers remote casino games, sports betting, and betting software. The platform uses SSL encryption to protect player data and is independently audited for fairness by eCOGRA. Players should be aware that Kwiff received a UKGC regulatory fine of £588,000 in 2022 for social responsibility and anti-money laundering failings, which is a matter of public record.

What is Kwiff's welcome bonus for new UK players?

As of mid-2026, Kwiff's casino welcome offer requires new players to wager £20 in cash on slots within five days of their first deposit to receive 200 free spins on Book of Dead. Each free spin is worth £0.10, giving a maximum spin value of £20. Winnings from the free spins carry no wagering requirements, but a maximum withdrawal cap of £250 applies to bonus winnings. E-wallets and virtual cards are excluded from qualifying for the offer. Always verify current terms directly on Kwiff's website before depositing, as promotional terms are subject to change.