A car is the best way to make a thorough tour of the area, given the limitations of public transportation. M4 is the main route west from London to Bath and southern Gloucestershire; expect about a two-hour drive. From Exit 18, take A46 south to Bath. From Exit 20, take M5 north to Cheltenham; from Exit 15, take A419 to A429 north to the Cotswolds. From London you can also take M40 and A40 to the Cotswolds, where a network of minor roads links the villages.