If you’ve never driven in the UK, or haven’t been to the Cotswolds and are unfamiliar with the area and roads, follow Jennifer’s advice. We always rent at Heathrow upon arrival and head to wherever it is we decide to spend the first night, which is not more than a 2-2.5 hour drive. Bath is an easy day trip by train from London. Parking is difficult to come by in Bath. Driving times to where you want to go will vary by your base in the Cotswolds; shorter from a town like Cirencester in the south, longer from Stratford Upon Avon in the north. Remember that once off the main roads, the smaller roads are likely to be 2 lanes with much lower speed limits. Since you intend on driving, rather than just looking at the final destination, look for things to see in all the small towns along the route. Many are charming, worth walking around, and often overlooked by tourists.