I know what you mean about no decent roads in London. However, a few weeks ago whilst travelling back from Worthing I found the A24, which was fast and fun. Very popular with bikers around Boxhill (fast twisty bits) and only a few cameras too. Plus you could get yourself JCW'd at the John Cooper garages in Worthing!!!
My favourite road is a B road linking Broad Hinton to Marlborough in Wilts. It's unclassifed I think, but the Lat & Long is thus: 51.4789, -1.8320. The road was always being used by the Top Gear crew (back in the day, when it was on during week) and in fact tonight's 5th Gear were testing the new LR Discovery on it!
My favourite road is a B road linking Broad Hinton to Marlborough in Wilts. It's unclassifed I think, but the Lat & Long is thus: 51.4789, -1.8320. The road was always being used by the Top Gear crew (back in the day, when it was on during week) and in fact tonight's 5th Gear were testing the new LR Discovery on it!