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