I’ll happily prove my ID, that I’ve used my card and my bank account. Any more than that and they can get lost.
Bank account redacted to only show my name, address and account number and possibly a transaction to the casino.
<b>I don’t necessarily think the casinos really want to do all these checks that are forced upon them by the UK regulators</b> but it gives them a good excuse to slow things down and possibly snare a few reasons to not pay.
As far as I can remember, when joining Sky Vegas they run a half credit check to verify identity. Same with Paddy power and Betfair.