Compulsory face coverings
ASLEF has welcomed the announcement.
Mick Whelan, general secretary, said: 'This is a sensible step by the Secretary of State for Transport. We have been working closely with the government to ensure that agreed increases in services on Britain's train, and Tube, network is done in a safe and controlled manner - to help spread the loading, and maintain social distancing - for the safety of passengers and staff.
'The instruction to wear face coverings to help prevent the spread of the coronavirus will ease the concerns of people travelling, and working, on the transport network.'
While this measure applies in England, the Secretary of State advised that the UK Government will be working with the devolved administrations prior to the implementation of this policy to clarify what the policy will be on cross-border services and within Wales and Scotland.
Alongside the wearing of face coverings, it remains important to take other measures to reduce the spread of coronavirus, including washing your hands frequently, avoiding touching your face and keeping a distance of 2 metres/6 feet from other people as much as possible.