I found Chesterfield (Gordon Lamb)very helpfull when I was buying and I purchased a used one from there that they had repainted and put loads of extras on. Excellent service, they even met me at the train station when I was tight for time just to show me the vehicle. I then went back to collect when I had more time. There were a few minor issues when I got it back to Aberdeen that weren't covered by the warranty and they said take it to your local dealer and they would cover the cost.
Can't praise them enough.
I tried using Roger Bass down in Essex and even paid a deposit based on his description of the vehicle I was interested in. Complete Con Man in my opinion, the vehicle was nothing like as described, said it was "in unmarked Java Black, looks and drives like new" it was covered in scratches had two dents didn't have a years MOT like stated although he did say it did have when the MOT was done 5 months earlier!!! He then went on to say it is fairly unmarked for a well used LR. It was the most expensive out of the many I looked at all over the country and the worst by a mile. It cost me about £300 to go to collect it and he thought that would be enough to make sure I drove it away. The worst used car salesman I have ever met and I would recommend giving him a wide berth.