I would like to thank Carole and Peter both for there comments they have saved me £1000. I was told I needed 2 new egr valves and a dpf clean which I could not afford at this moment so I picked my car up put it in sports mode and raced it for a good few miles to Halfords to get some Wynns Egr Valve cleaner.
Once I returned home I opened the air box and emptied the can in short bursts then took it for another run and what a difference it made. Yesterday I filled up with V Power diesel and took her for a 20 mile drive to Telford and back never missed a beat and no restricted performance. Thank you both so much.