If you have a radiator valve key (it's normally got a square or triangular indentation in the end) you insert that in the end of the radiator - one of the nuts you mention is probably the valve. Turn it gently - have a cloth or dish handy as once the air clears, the filthy water inside will scoosh out quickly.
Right, on the left hand side is an hexagonal nut and on the right hand side there's an hexagonal nut with a screw in the centre.
There is no traditional triangular hole to put the bleeding key in.
Shall I loosen the right hand nut screw with a screwdriver and see what happens.
This is one of those lovely shiny, five foot high heated rails
If you use a knife, make sure the tip of the blade fits the slot in the screw nice and snug. You have got the heating on haven't you, the hot water as to be circulating around the system for you to bleed the rad ?
No Tony. The heating's not on. That thought just occured to me whilst I was looking for the screwdriver. I was just going to ask you if it would work when the heating's not on.I'll leave it until we put the heating on and trey then. I'll put the screwdriver in a safe place. Then I will forget where I put it. Anyway, I think I've got an idea what to do now thanks to all. I'll ask again in October, if I can't do it then.
Only because, yesterday. I put two damp towels on there and this morning they were still a bit damp. So I thought to myself. 'Ill be glad the get the towel rail on again.' and then I though, 'Oh, it needs bleeding.' Then, I thought 'I know, I'll ask Tony, he'll know what to do!'