Hi Gareth
I did buy the car second hand yeah and noticed this issue a day later and took it back , they have said if I get it diagnosed they will sort the issue as they have had a look and they can't see nothing ,the car had a brand new M.O.T when I bought it, the starnge thing is on level ground the car dont look like its leaning at the back you can see this from the side ,I'm hopefully going to get this into the garage this week to be checked if not by the garage I would normally use then by an Audi garage ,
Regards
Chris