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