Thank you for your help, luckily it broke down at home... Somewhere down there on the drive!!! But I do need to remember the fuse trick just incase...
Landers aren't bad for prices really, I've had the tank out before due to a corroded return pipe... I wish I'd just replaced the bugger then... But because it was only a small leak and the pump ran well, I put it all back in again.... Punching my own face is now becoming an annoying habit......I do remember the filler neck connection pipe looking a bit naff at the time.

Stuff just gets a bit much sometimes..