Alright lads ,
After taking my car to a vw/audi specialist who lives locally and does guvvys in his garage , he vagcomed it and had a good check over . The camshaft was slightly scored but he said its 50 50 whether it's the hpfp or shaft, with the pump being the easiest and cheapest to try first we did and get the f *#k in its fixed . Well happy .
So I hope this thread can help anyone who in the future encounters similar problems . I suspected all along that the camshaft would need replacing as I always feared worse case scenario, as it's scored it's always going to be in the back of my mind but the code readers are all saying no faults so if it's driving well I am happy .