Thanks to everyone for the replies.
Hi Dick
thanks for going the extra mile!
Mine are the other ones; they are the small round lights but there isn't any surround that opens from the front, only access is from behind.
I have seen the thread in your link and the one peejay started
< here > longer term i want to sort something nice out, along the lines of wingnuts fastened onto the screw heads or something, to make it a tool-less easy job, but we are away abroad at the beginning of august and i don't think i'll get chance before we go
in the interim I think i'll go with either tape or stick on beam benders, i don't know where to stick the tape so i'll have to use beam benders this year.
If anyone has purchased benders that would suit mine, as in the picture below (not my van, random on the internet), could you please post a link so i get the correct ones.
Thanks again
Lee