TRAVELINE | Provides online travel planner services for all public transportation across Great Britain. They also have separate planners dedicated to specific regions.
+ Getting around Britain (visitbritain.com).
BUS > National Express | UK Stop finder. Gloucester bus station has many regular coaches (mainly operated by National Express) to all major airports and cities (there are several coaches to and from London daily) in the UK. A Megabus service to and from London also operates from outside the bus station.
RAIL > Gloucester station has good railway connections and has daily direct connections to London Paddington, Cardiff, Bristol and Birmingham. The essential source for rail travel information in Great Britain is the National Rail website. It includes an extremely useful journey planner, ticket prices and detailed information about every railway station in the country. (*Rail travel in Great Britain).
AIRPORTS > airportguides.co.uk. The most important airports are London Heathrow, London Gatwick and Manchester Airport. All three have multiple terminals and are collectively served by a vast range of airlines and flights from the four corners of the map.
WATERWAYS > There are many ferry routes into the UK from continental Europe. (*Ferry routes to Great Britain)
Bicycles may be taken on car ferries and on Eurotunnel shuttle trains. Eurostar allows folding bikes on all its trains, and offers a more restricted service for other bikes, but has quite strict and specific rules that are worth reading up on before you travel.