Thanks for your reply Ian but it seems to have sorted itself out. I went to bring the car in at the end of the day and it ran perfect so cleared codes and went for a spin and it was perfect!!

The only reason I can think of is that despite following the programming instructions exactly, (switch off the ignition for 30 seconds to reset the control units) I think that kicking the vehicle out and fully disconnecting all scantools, removing key and locking the doors etc for an hour or so actually allowed the controllers to reset, as opposed to the 30 seconds TIS said it required!?!

Any thoughts welcome?

Thanks
Craig