I D verification to make a withdrawal

Why do sites let you register let you play , then when you make a withdrawal silence for several days then they ask for verification.

surely the whole thing about I D verification is to ensure you are old enough to gamble for one thing as well as being a genuine good person ! 😂

It's a standard procedure. Basically, it would be very time consuming to verify every player who registers in the casino. Many people just register and don't play at all, some just make the first deposit and leave forever. The ID verification is something that's based on the gambling license, but it always depends on the licensing authority.

If the UK gambling commission changed the rules and require to verify everyone who registers in the casino immediately, otherwise the registration couldn't be completed, then the casinos would need to follow the rule.

For example in the Czech Republic, everyone who wants to play in an online casino licensed by the local authority, needs to visit a "checkpoint" (it's often a post office) or casino's office to verify their identity physically.