Public Restrooms in the Cotswolds

I always seem to be worried about finding a restroom when I need it. We were in London two years ago and were at the Ceremony of the Keys at the Tower of London. It was late in the evening and the little shops were closing. I thought I would be able to go in to Starbucks right across the street from the Tower. The door was open and they were sweeping, but they shewed me away. I just went in to the closest pub and asked them if I could use the loo and they were fine with it! But what about the country areas in the Cotswolds? If you are walking from one little village to the next on the footpath and need to take a break, what do you do??