Hi Folks,
Just to say a big thank you to everyone, who wrote with suggestions and thoughts in sorting my 4/4. The problem was the earth lead from the starter to the bodywork. The very point where the RAC guy had cleaned the connections, when I broke down. Whilst this sorted the problem temporarily, as one post said, the leads can look in good condition from the outside but failing on the inside. I replaced the lead and it has now fired up a treat.
Thanks again, Mark