Carplus is the umbrella organisation for Car Clubs and sustainable car use in the UK:

www.carplus.org.uk

These are the sites of national car club operators with a presence in
different parts of the country:

www.smartmoves.co.uk

www.mystreetcar.co.uk

www.whizzgo.co.uk

www.urbigo.com

Lift-sharing is another way to reduce car dependency:

www.carsharegloucestershire.com

Journey planner and timetables for public transport journeys anywhere in
south-west England, or throughout the UK:

www.travelinesw.com

www.traveline.org.uk

The government site for journey planning by alternative modes of transport
throughout England and Wales:

www.transportdirect.com

Trainline