Look thank you very much for the advice, really appreciate it but don't really know why it's got your back up so once again thank you for the advice.

Thanks for all the responses, took the plug off and cleaned it out which seemed to work for about 30 minutes but the problem came back so took it to a garage and had them replace it. Picking it up tomorrow. However, not quite sure how to respond to the last two (very bizarre) posts from 'Ratty'...

Thanks.

Can anyone suggest somewhere good near one of the following places that could repair this for me? West London (nr. Notting Hill) Swindon Dartford, Kent

Hi, did you get this problem fixed. I am getting a very similar problem.

I am having the exact same problem as this, did you ever find a resolution? I'd really appreciate any help!