Am I crazy to consider it? Knowing how well they generally do things (and that their guides are top-notch), and that of course a few DAYS in the Cotswolds would be preferable, it still sounds like a fun way to at least get a fun day in. Train from Paddington, and then you only have to do coach/van a little bit up there, and they walk from at least one place to another.
Again, I know it would be so much better to go for a few days, but that's not an option for me right now.
Merci!