I haven't traded but I can tell you some things to do. Visit Edinburgh, (I stayed at a hostel) and roam around there. Edinburgh castle is very big and pretty. The crown jewels were buried there during WW2.
We also visited Glasgow for dinner, didn't have much to do because it seemed like the whole city shut down around 6pm. Getting around is very easy though. If you have any questions about some things to do, send a PM, I can try to help. I was only there for about 2 days for the British Open in '09 before I went to London so my knowledge may be a touch limited.