£100???
Obviously it depends on where the leak is but it could be:
a) a quick tighten of a nut £25-£50
b) a quick tighten of the bleed valve £25-£50
c) leak on the connection part that goes into the radiator - turn off valves, drain, re-fit connection and refill - around £50
d) leak on trv or lockshield which will probably require a drain down, refill, inhibitor, etc and involve at least 1/2 day's work plus around £30 of materials - anything from £150
None of the above prices (based on where I live) match £100
Of course, if you see the BBC's cameras before you start and feel they're wasting your time in testing you then you could give a quote for £12,000 and if they agree to the work, they can't get out of it and can't really complain ...
I fully agree with you, Secret Squirrel. And some wonder why the construction industry is suffering. I suppose it makes news and as long as it doesn't affect the media and the programme makers, why should they worry. The media's only in it for themselves and is only interested in short termism and couldn't care less about anyone.
Wish your soap box was larger and had microphones attached directly to the trades unions headquarters and the BBC ...