The list of exemptions for sports is just stupid, some I understand (team sports where more than 6 participate) but angling? shooting? climbing? etc. etc. what a load of bollocks.
That list someone posted earlier is certainly not complete – perhaps it was the latest additions. Essentially though, if the sport has a national governing body (NGB) they have been able to liaise with the DCMS (and the equivalents in the devolved administrations) to agree sport specific protocols which minimise risk. Just because you can do some of those things alone doesn’t mean its the only way to do them and that rules aren’t needed to help people understand what you can and can’t do (which may well be that you can’t do some of the larger group stuff!)
Angling – you are presumably thinking of one person on a fishing bank? but what about when they hire a rowing boat? or charter a boat to go sea angling? what about angling competitions? private fisheries or an estate and its keepers taking a group? etc.
Shooting – I don’t know much about sport shooting, but I’m pretty sure that its not usually done with one person on site at a time.
Climbing – well the bare minimum is essentially 2 people, but what about instructors running a session, or an indoor climbing wall where more than 6 people would usually be present.