Public Transport: Trains, Bus, Metro
British Marketing Services is BritRail Paris Office, all railways tickets and passes to UK and Ireland. Access to Point to Point tickets and passes, fares available only to non-UK residents. At 64 blvd de Sebastopol (Arr 3) Metro: Reamur Sebastopol
SNCF - Transilien
The Transilein is the SNCF network serving the Paris suburbs. Most of the information you need to know is best found through the RATP.
Noctilien: Night buses
Noctilien: more night bus lines for the Ile-de-France region! Night travellers, the new regional bus network is just for you! The Noctilien network means more buses, more frequently (35 lines throughout Ile-de-France) See website for details.
RATP - Paris Public Transport Network
The RATP operates most public transport in the Paris region. Their website offers a lot of useful information about tickets and travelling in the Ile de France as well as traffic conditions.