So hoping the answer to this is no.
We've been asked to provide a sports kit of plain light coloured shirt and plain dark coloured shorts but no mention of whether the kids take off their vests and socks to do PE.
I suppose I was going to label pants anyway as ds1 will be having to change those if he has an "accident" which we've been told to expect at one time or another.
I don't actually remember plimsolls or trainers being mentioned so I'll have to check the written instructions again, when I find them again (if only I knew where I'd put them 2 months ago).