Hi Graeme,
Try wiggling the wires that attach to the starter motor, and rocking the car forward and back whilst in gear used to work for me. I then installed a relay as recommended and that did help, also taking the starter motor off and greasing the relevant bits made a difference.
In the end after years of trouble I got a new starter motor with the solinoid beneth the starter motor, since doing this I haven't had a problem. SevenSpeed sell the same starter motor here.
Ed
😬
Edited by - edh on 16 Aug 2011 15:08:26