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