as promised I will update this when I know a bit more!
@Pudding you were right.... it was the injector. I had the compression tests done, and all 4 cylinders were holding the same pressure so that was a good sign.
I had all my injectors taken off and sent to Mr Injector (Thanks to an
@AJP thread) and for £112 I had a full set of renewed injectors.
While it was at the garage I also had the carbon cleaned - The car feels SOOO much better for it. I picked it up yesterday and it was soo quiet I had to double check it was actually started :)
Thanks for all your help guys!
Faz