Thanks for all the advise, from reading other people experiences etc, I think it may be combination of things, the auto box, tyres and the traction control system.
What seems to happen say at 40mph on a straight road in the dry,(i.e. today) is that the auto box puts it into first gear and there is a massive surge of power and straight away the back end starts stepping out, then the traction control kicks in which seems to cut the power all together which makes it worse because you can’t steer the car on the power and back end just breaks away!
I think i may invest in the rltc and some different tyres
Thanks a lot.