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