Thanks for the answers chaps. If it was just a case of £30 I'd give it to a garage to do. But it's not. I've been quoted 3hrs of labour to do the brake pipes. I also need new pads on the rear and a new caliper - that'd push it up to 4 or 5hrs of labour.
I can see the point made by some of the professional posters about horror bodge jobs done by amateurs, but frankly I don't trust garage mechanics to do the job much better either - it's not their car and they have an interest in charging me over the odds for parts and rushing the job outof the door as quick as possible. I'm a former toolmaker and have got very high standards.
I'm gonna do the job myself.
cheers folks
Antony