We have 12 days in England excluding travel days. Our main interests are cathedrals, palaces, history, medieval town centers, and the Cottswolds for a day or so. We can skip Stonehenge and Avebury. Can you experts help with itinerary advice? Does this itinerary make sense from a logistics and $$ viewpoint? I'm having the most trouble figuring out the Wells-Bath-Blenheim-Cottswolds portion of the trip. I don't like renting a car out of Heathrow and then letting it sit while in Bath, but it's a lot cheaper than renting the car in Bath and dropping it off in Heathrow, plus it lets us see Windsor on the way to Bath. We also want to minimize hotels moves as much as we can.
Tue, Sept 16 Arrive Heathrow late at night (after 22:00) and stay at hotel on airport grounds
Wed Rent a car at Heathrow and drive to Bath seeing Windsor Castle on the way; overnight Bath and park car in a car parking lot
Thur Tour Bath...do not use car; overnight Bath
Fri Drive to Wells and Glastonbury for the day; return to Bath and spend the night
Sat Drive to Cottswolds (maybe Chipping Campden?) seeing Blenheim on the way; overnight Cottswolds
Sun Tour Cottswolds; overnight Cottswolds
Mon Drive back to London, return car, rent apartment in city center
Tue, Wed, Thur Tour London
Fri Day trip from London (Greenwich? Canterbury?) by train or bus
Sat Train to York
Sun York, then late train to hotel on Heathrow airport grounds
Mon Fly out early Monday morning (9:30)
Our air fare is booked so it can't be changed. Thanks for your advice!