Thank you so much for your reply. Amazing young mechanic found the leak on the high pressure pipe - he wouldn't give up! So, new pipe orderd, 4hrs welding and it'll be ok.
Only problem now is too many cars as I've bought a Micra as a stop gap!
Silly road coloured Honda with a broom handle for a boot prop, a sat nav from another planet and a dongle phone interface because it won't play my Beatles cds. Love it!