Hi Trev...Thanks for the reply....I'm just about to go to the garage...unfortunately there were no codes to be read which seems quite strange....I've just taken the car around the block this morning and it was fine, so I'm thinking it's to do with transmission once the oil has warmed up,...the engine it's self whilst out of gear sounds fine, so that's points to transmission too, but of course I guess there are lots of other potential candidates which I wouldn't have a clue about,filters,sensors, Cats and so on...again many thanks...John