The Warwickshire transport site (www.warwickshire.gov.uk/transport) has details of local bus and train services, as well as news on roads. Coventry is a major transport hub, with rail connections to London Euston and Birmingham New St.
A good ticket option is the Chiltern Rover (adult three days £39), which allows return train travel from London Marylebone or Paddington to Stratford-upon-Avon, Warwick or Leamington Spa on three chosen days within a seven-day period. It also includes unlimited travel in areas between, including Oxfordshire and Buckinghamshire, and free travel on Warwickshire’s Stagecoach bus network. You can only buy the ticket from London’s Marylebone Station.