Hi Clive I took the UJ apart and there was a roll pin broken into 3 pieces some going given the short length of them. There is also a problem in the diff it is noisy and notchy when you spin it over by hand so I will be looking for a replacement. Luckily I have 2 days off at the end of the week so all being well I can get it back on the road.
Thanks to everyone for the advice I will let you know how I get on.