Re: Ofcom is to blame
"Anonymous Call Reject and Caller Display ?"
The problem there is so many people you need to call you still use number withheld, eg Schools, NHS, etc., which can affect the most vulnerable people the most if blocks. Likewise, Call Display doesn't often help because even calls coming from out of country will present what appears to be a local, usually invalid, number at worst, at best, something that looks very like a UK number.