So, if you have to promote someone in "second place" then it is (in my order of preference): William Hill, Betfred, Paddy Power / Betfair, BetVictor, Unibet.
All stole everything except Unibet.
Unibet is doing what they are doing. On the top their value of UK palyer is extremely low on RS (they are good elsewhere). I guess because of deductions.
For me the 2nd "best" in UK is tonybet (part of 22bet/playamo [who closed 22bet.co.uk with all players...]). Indeed their brand recognition is very likely zero. But from new players they deliver at least something. Def more than Unibet.
If you talk to God, you are praying; If God talks to you, you have schizophrenia.