Kwiff sister sites
Kwiff is the only sportsbook in a small family of three. Eaton Gate Gaming Limited runs it alongside 2 sister sites, Slotsking and Grpcasino, all on one UK licence.
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All 2 sister sites
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Player Score: our 0–100 rating from thousands of player reviews on trusted review sites and official app stores. Unhappy players post more often, so we adjust for that. Poor is under 40, mixed 40–59, good 60–74, great 75 and up. Scores marked est. are estimates for newer sites: their own reviews so far, blended with the scores of their sister sites (same company, same payments and support). How we score
What sharing a licence means
Self-exclude at Kwiff and the block also reaches Slotsking and Grpcasino, since all three sit on Eaton Gate Gaming's licence.
Kwiff, Slotsking and Grpcasino each need a separate sign-up, so each site's welcome offer is open to you once.
Kwiff's trail
- NowRun by Eaton Gate Gaming LimitedChecked 12 Oct 2026 · licence 044448-R-323408-017
- LicensedMar 2016Eaton Gate Gaming Limited licensed by the Gambling Commission.
From the Gambling Commission register, checked Oct 2026.
Kwiff sister sites FAQ
Who owns Kwiff?
The licence holder is Eaton Gate Gaming Limited, listed under Gambling Commission account 44448.
What are the Kwiff sister sites?
There are two: Slotsking and Grpcasino. Both share Kwiff's UK licence, which is held by Eaton Gate Gaming Limited.
Does self-excluding from Kwiff cover its sisters?
It does. UK self-exclusion works at licence level, so Slotsking and Grpcasino are blocked as well. For wider cover, GAMSTOP spans every UK-licensed site.