Sub 250 drones might still be prohibited in most London parks

Hey fellow flyers. I have read the essentials if not all rules and laws with flying a drone in London. Apparently, we could fly sub 250 anywhere (with some minor restrictions). What frustrates me is almost all London Borough bye-laws do not allow drone flying in almost all parks which leaves us flying over residential areas instead which some of us doesn’t really like specially if you want to fly FPV.

I might be wrong so it’s very helpful if you can give some insights.