Hi all. My family and I will be landing in Heathrow later this month and heading directly to the Cotswolds for a few days, then staying in London (City of London) for a week or so. We're planning on renting a car, but unsure what the best option is for travel between the three destinations (rent and return car at Heathrow? train to Cotswolds then pick up & return car there?). We have a 1 year old and all the associated gear so I'm interested in the most hassle free option. Oh, and we're staying in Cirencester.