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GRP Casino Sister Sites

GRP Casino sister sites are kwiff and SlotsKing, and all three trade on one British licence held by Eaton Gate Gaming Limited. Some older guides still list kwiff as the only sister site, missing SlotsKing entirely.

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⏰ Last Researched On 12 August 2026
🌟 Claims over four thousand games
💰 Two live jackpot meters on the lobby

👥 Who shares the account with GRP Casino

Two other brands trade on the same licence, one of them built very differently from a slots-and-tables lobby.

kwiff

⚡ The only one with a sportsbook · Last Researched On 12 August 2026

kwiff pairs a wide sports coupon with its own casino, built around a Supercharge mechanic that boosts odds across the board rather than on one promoted market. It is the only one of the three the licence actually names as a trading brand, and the only one that can take a bet on a real sporting event.

SlotsKing

👑 No welcome offer on the day we looked · Last Researched On 13 August 2026

SlotsKing is the newest and quietest of the three, dropping a visitor straight into a shelf of games with no homepage to speak of. Logged out, on 13 August 2026, nothing on the page hinted at a joining bonus at all, an unusual choice for a casino this size and worth recording as a dated fact rather than an assumption.

Only kwiff can take a sports bet, purely because of what its licence allows rather than a choice either sister made.

🎰 Casino only, and what the front page actually promises

GRP stands for Gold Rush Play, and the theme runs through the whole site: slots, jackpot slots, live dealer, table games, crash and a small lottery section, with no sportsbook and no way to reach one from the lobby. The front page claims more than four thousand games and leads on three promises: bonus offers, that game count, and fast withdrawals. Player support is handled on the same domain as the casino itself rather than farmed out to some unrelated helpdesk address, more than plenty of similarly sized casinos bother with.

Two jackpot meters run at the top of the lobby, and both moved between two readings taken seconds apart, a reminder that any exact jackpot figure printed anywhere is already out of date. The wagering rules, minimum withdrawal and payout timing behind the bonus promise are not on the front page at all; they sit only in the terms document, which is kept on a different website entirely and was itself offline for a day during our check.

📋 The licence file behind the name

Only one trading name is filed on the account, and it is kwiff, not GRP Casino. That does not make GRP Casino unlicensed; it is filed as an address rather than a brand, so typing the name into a search brings back no result at all.

Seven addresses sit on the file altogether: three working casinos, one that forwards elsewhere, one that does not resolve at all, and two app store pages for the kwiff betting app. Every one of the seven, and what happened when each was opened, is set out address by address on the licence page linked below.

🔑 What the licence actually allows

📌 GRP Casino, what the file shows

  • Runs on the casino permission only, held since December 2016
  • No betting permission on this account extends to GRP Casino
  • No trading name filed for GRP Casino specifically, address only
  • No premises are attached, and none are available under a remote licence

Betting permissions were added to the account in March 2016 and February 2023, both used by kwiff alone. GRP Casino cannot offer a sports bet not because of a business choice but because the licence itself never extends that permission to it.

⚠ Two Commission pages, two different answers

The Gambling Commission publishes a page for this account listing any fines handed down, and it says there have been none. Look instead at the Commission own full list of enforcement outcomes and Eaton Gate Gaming Limited turns up with a real result: an operating licence review that closed on 8 December 2022, bringing a formal warning, a condition forcing an independent audit within a year, and a payment of £480,305. Investigators pointed to gaps in anti-money-laundering checks and to how the operator dealt with players showing signs of harm. None of it sits against a single brand; it sits against the licence itself, which is why GRP Casino carries exactly the same weight of it as kwiff and SlotsKing.

🏢 Three names, one company on the hook

Three companies are named at the foot of the site. Kwiff Limited, based in Malta, runs it day to day and is named in the small print as an authorised agent operating under an umbrella arrangement held by its parent, Eaton Gate Gaming Limited, the company that actually holds the British licence and answers to the regulator if a complaint escalates. A third company, Spryme Limited, owns the copyright line on this site and is entirely absent from the licence file itself.

One point of confusion is worth flagging without printing either figure: the footer number and the actual licence reference are two different strings, and several guides have wrongly quoted the first while calling it the second.

  • ✅ Safe: reading the terms document itself for wagering and withdrawal rules rather than trusting the three headline promises on the front page.
  • ❌ Costly: treating this account regulatory-actions counter of zero as proof of a clean record, when a separate part of the same file says otherwise.

🔗 One file, three brands

kwiff covers the sportsbook side of the account, and SlotsKing covers the newest and quietest of the three, each with its own games, cashier and lobby detail.

Eaton Gate Gaming licence page
Every one of the seven addresses, what each opened on the day, and the full story behind the penalty, set out once for the whole group

See GRP Casino on the casino sister sites index.