Sam Compound Curvatures Nottingham repaired my P type radiator shell and made a new nose piece. It's a tiny set-up and it was a few years ago so I'm not sure whether the owner, Mr Pettet, is still operating. If you call him you may need to try several times as he isn't always there. Peter
I have an original which needs some tlc - primarily around the top where the 'ring' is coming apart from the main body. £25 plus postage. I can send you some pics if you are interested.