Been using Single Bet Calculator since around February, mainly on mobile, so take this for what it's worth. Found it off another forum thread, nobody paid me.
The lobby is bigger than I expected — around 2,500 slots according to the filter counts. NetEnt takes up most of the space, so Sweet Bonanza and the usual suspects all show up. I mostly stick to Yggdrasil stuff out of pure habit. Small annoyance — the search function on Single Bet Calculator is a bit rubbish, you often have to scroll.
The live dealer bit is almost entirely Evolution, so you know what you're getting. Proper human dealers, decent stream quality, and Crazy Time and Lightning Roulette is where I lose most of my money, honestly. Should mention the British tables are properly staffed from about 6pm onwards. Before you deposit anything I'd have a nose at work out single bet since the offers shift about.
Welcome offer on Single Bet Calculator is ?100 matched plus 100 spins on Book of Dead. Rollover is 35x which is standard-ish. There was a small no deposit thing when I registered. Minimum is a tenner, sign-up took me maybe five minutes, ID check was same-day.
Payouts are decent. Card payments take 2-3 days, e-wallets were same-day for me, and crypto clears fastest. Cashed out ?340 last week and it landed early. The live chat on Single Bet Calculator answered in about four minutes — actually read my message. Properly licensed for UK players, so at least there's a complaints route. There's no app on the Play Store, which is mildly annoying but the site works fine.