Ok found the fault 3 injectors was knackered! So went and replace all 4 today also changed engine oil and filter as I think diesel been leaking.pressured system and hoary it alive! Thank you all for your help much appreciated.
Yeah they have a good reputation from what I've read and I couldn't fault the service when they did mine - Obviously have a look on google etc. Although I know James personally I think although he oversaw the process, it was still the same turnaround as it would have been for anyone else.