Bonanza Megaways. Kwiff Casino: Best Free Spins Slot Site. Best Features: Over slot games, including more unique slots like Scratch King. Best UK Slot Sites · 1. Find the best UK online casinos with the latest real money slot games, excellent bonuses, online betting, loyalty rewards and more. Book of Dead (Play 'n GO) · 2. All UK Slot Sites () · Bally Casino · Planet Sport Bet Casino · Casushi Casino · [HOST] Casino · Lottoland Casino · BetUK Casino. Find your perfect match and win real money at the most trusted slot casinos in the UK. These generally come from leading software providers, with Starburst, Book of Dead, Gonzo's Quest and Bonanza being among the most popular slots. Leo Vegas: Best Mobile Slots Site. Casumo · 3. You are. PlayFrank · 2. Top UK casinos for playing slots · Duelz · Mr Vegas · Magic Red · MrQ · VoodooDreams · Luckster Casino · Winomania · Hotstreak Slots. Over Slots; Best Game Providers; Huge Live Casino Section. Best Online Casino Site for Slots: Winomania. % Bonus up to £50 + Bonus Spins. Immortal Romance (Microgaming) · 4. Discover the Best Online Slots · 1. Mr Vegas. Videoslots Casino · 4. . Starburst (NetEnt) · 3. Play a wide variety of online slots at the best UK slot sites. Fun Casino · 5. JackpotJoy Casino: Best Progressive Jackpot Slots Site. Magical Vegas Casino: Best Megaways Slot Site.