If you look at the top of the last screenshot you’ll see it says the item found was a bank card, and then proceeds to say you can hand it in to a police station.
IMHO @anon70107404’s initial post suggests with absolute certainty that the police do not accept valuable lost property across the UK, when that’s demonstrably not the case. (and to be honest, while perhaps well intentioned, also necroed a thread to make a point).
Yeah, there certainly are variations, despite there being a National (England and Wales) policy.
If we come back to the original question of what to do with a found bank card, I’d suggest just cutting it up. The loser will contact their bank when they realise and have the card cancelled and reissued.