Question to the Department for Transport:

To ask the Secretary of State for Transport, how many assaults there have been on staff working for (a) London Underground, (b) London Overground, (c) London buses, (d) Docklands Light Railway and (e) Tramlink in each year between 2010 and 2014.

The Department for Transport does not collect this information.

However, I am able to say that the British Transport Police will shortly be launching Project Servator, which aims to detect and deter crime on the railways. It deploys highly visible and unpredictable police patrols to prevent a range of criminal activity, from pickpocketing and theft to more serious crimes including terrorism.