What company did you use, Eden, and what area did you explore? For years, that was on my bucket list and then I got sidetracked with near a near total obsession with Paris. DH has expressed an interest in something like that though. We figured out after a few trips together, that we do better in smaller settings than in big cities. A walking tour would be just the thing. The hard part would be picking which area of England/Wales to explore.