I will be traveling to the UK for three days of meetings in Uxbridge. Not sure how much free time I'm going to have yet, and need to do this "on the cheap." Reasonable lodging options appear to be the Crowne Plaza Heathrow, Grim's Dyke (up in Harrow), or Harmondsworth Hall (in West Drayton). I don't care for the city, but love good food and good beer and don't mind walking around for it. I should have Sunday to myself (if nothing else), and will probably try to figure out a reasonable day trip somewhere, but would prefer to avoid renting a car if I can help it, as that's definitely not cheap in the UK. So reasonable walking distance to a rail station would be a big plus, but none of the three appears to offer that (though Google Maps isn't the most reliable at UK addresses). I'm a big fan of castles, ruins, and ancient monuments. (For our honeymoon, my wife and I did two weeks around UK, including Avebury, Stonehenge and a weekend in Stornoway so we could visit the Standing Stones of Callanish.)
From what I've read so far, Harmondsworth Hall sounds like the best option for me, as it's within walking distance of a couple of decent pubs, but not sure if one of the other places would be a better choice. Anybody have any opinions or thoughts either way? Suggestions for a reasonable day trip from any of those three venues? Any can't-miss restaurants in the area? Thanks!