A tube strike involving staff at London Bridge station has been announced after workers were disciplined for stopping an assault on a pregnant co-worker.

RMT Union has announced the strike, to take place from 10pm on May 7 until 9.59pm on May 8.

One worker was sacked and two others disciplined after they attempted to stop an assault in fellow staff, including one that was pregnant, in an incident last November, though Transport for London say the RMT’s version of events is “simply untrue”.

RMT General Secretary Mick Cash said: “This is one of the most appalling abuses of the LU disciplinary procedure that RMT has ever come across.

This was a shocking, violent incident and those that bore the brunt of it should have been supported and commended by the company.

Instead they have been sacked or disciplined in what is the most appalling multiple miscarriage of justice.”

Mr Cash also called for London Underground to reinstate their member and lift the disciplinary action, before saying he believed the public “would understand” the need for the strike.

Brian Woodhead, Operations Director for London Underground, said: “CCTV footage from a number of different angles clearly shows a staff member displaying unacceptable conduct when dealing with a member of the public.

"The member of staff was dismissed following a full and thorough investigation and we have subsequently invited the General Secretary of the union to view the footage himself, but our invitation has not been accepted.

“That offer is still open and, while we intend to keep London Bridge station open throughout the strike, I encourage the RMT leadership to do the right thing and call off this unjustifiable industrial action."

The strike is scheduled from Sunday night so check before you travel to and from London Bridge.