Thanks a lot for all your replies people!
So basically I am looking for a trailer car combo of under 3500kg or a recovery vehicle with a car on the back of under 3500kg which is pretty much not gonna happen really is it?!

Soon as I put a normal car such as mk4 escort on the back I'm over weight and you can just guarantee my luck that VOSA will be at the next motorway junction

So basically the only way I am going to be able to transport un roadworthy cars long term is to pass my B+E test and get a trailer with winch.
Unless anyone has any other ideas??!!