Many thanks for all of the suggestions. First, we did have a nice time being based in Chipping Campden for a few days - enough infrastructure in town for restaurants, galleries, interesting side trips (Blenheim, and actually visiting Churchill's grave in the little town nearby. Not too touristed at this time of year, but we were mostly out and around during the day. We'd been to Bath a few times before.
We have visited Great Britain a number of times over the years, and wanted to explore more of the southwestern part, the main targets being Devon and Cornwall. Yes, we have very much enjoyed trips in England, Wales, and Scotland in both small towns and larger cities. We had been to Bath twice before. (I will be back in London in January. We are thinking about a small boat cruise in the Hebrides, Orkneys, etc. in coming years. While we are able to drive, we tend to take advantage of this flexibility to feed the DBH's photo interests in out-of-the-way places.)
I'll try to provide more details at a later time, but our trip this year included a driving tour. We tend to stay in one place for at least 4-5 days, but sometimes only 2 nights, depending on our past travels and driving distance needs. The DBH (Dear Beloved husband) has taken up a major hobby in photography, and he/we wanted the ability to let our interests dictate the days. As such, we like attractive places to stay that are not to difficult to get in and out of with a car. We did book our hotels -- even in shoulder season in areas that can have tourists, we prefer this tan spending vacation time finding a place for the night (thank you internet and research, Rick's excellent advice, and a travel agent friend we work with.) We started with two nights in Salisbury to get over jet lag and see the cathedral; a number of nights in Dartmoor at an inn/resort near Mortonhampstead; a number of nights in Marazion; a couple of nights in Bristol; 4 (5?) nights in Chipping Campden; and the Marriott Heathrow the day before we left.
(To note: we spent a day-trip in St. Ives. Very touristy, but had a nice lunch overlooking the beach on the other side of the peninsula, near the Tate. We took a little train into town to avoid the parking nightmare. Nice galleries, etc., but we'd only stay in town if traveling by train (or tour) and not having a car. Even the hotels in walking distance just outside seem up and down a big hill (read: just to do anything in town, it's a hike. A day's hike on the coastal path in Cornwall is one thing - hiking to dinner, etc. is less fun. Parking in town looks like a nightmare. )
'Must admit that we crossed paths with one of Rick's Travel tours in Chagford in Dartmoor. They were based in a very nice, atmospheric inn where we had lunch. 'Looked like a very nice group and well (but not oppressively) organized, probably on the "Small Villages/Towns of Southern England" tour. I have to admit that we may join one of Rick's tours in coming years, but right now we want the flexibility of not being on a schedule if we can manage the general arrangements ourselves.
In the meantime, I just wanted to contribute to Rick's website and mention my impression of Moreton-on-the-Water at this time of year, partly as a thank-you for providing so much great advice in the guidebooks, website, etc. (Yes, we download some of the individual bits for tours of cathedrals, museums, etc.)