After flooding both my bathroom and subsquently the kitchen below in trying to remove the towel radiator that had a slight leak, as STILL NOT STOPPED THIS LEAK after re-fitting wanted to avoid another flooding!
Hence removed the top valves after isolating the water supply and inserted some hosepipe and sucessfully syphoned the water out into the shower tray! First side did get a mouth full of radiator water, but next side I heard it coming so avoided this.
Thus now going to look for some clear hose, as got another radiator that has pulled the raw plugs out of a stud wall to repair!
My leak would appear to be fixable (still learning DIY plumbing) if I add PFTE tape of Liquid PFTE to the valve - saw this on this site.