Tube barriers to be left open in more industrial action
London Underground staff are being instructed by unions to open ticket barriers across the network on Friday.
And ticket inspectors are being told not to issue penalty fares during the action, which will take place from 9.30am to 11.30am and from 6.30pm to 8.30pm.
The move, revealed in the Londonist and labelled a 'revenue strike', will be repeated on Monday, February 10, and Friday, February 14.
A message to staff, issued by RMT General Secretary Bob Crow, said: "It is imperative that all members follow these instructions and inflict the most effective disruption to management.
"But I would add, however, that all other normal station working should continue and work should be carried out safely."
Union members are also being told not to help people at ticket machines.
It follows the Tube strike this week, which is due to end at 9pm tonight. A further 48-hour walk out is planned to begin next Tuesday.