London Underground power control staff to go on strike
Power control staff on London Underground are to go on strike in a row over conditions and other issues.
Members from three unions - Unite, Transport Salaried Staffs' Association (TSSA) and Rail, Maritime and Transport union (RMT) - will walk out for 24 hours from 20:00 BST on 1 July.
Unite said the dispute was over "unfair treatment" and "worsening conditions".
London Underground (LU) said its contingency plans meant the strike would have "no visible impact".
A previous strike by the workers, who distribute electricity across the network, was called off to allow for talks, but unions said these had broken down.
The long-running dispute involves workers who transferred to other organisations years ago coming back under LU management, but with different conditions.
Unite regional officer Hugh Roberts said: "The issue here is broken promises, unfair treatment over differentials and worsening conditions.
"London Underground management's penny-pinching attitude is not being driven by common sense, but by the background agenda of budget cuts in the Treasury's funding."
He also warned of further industrial action that could hit the network when the Tour de France cycle race arrives in the capital on 7 July.
Richard Jones, LU's head of command and control, said it had resolved a number of issues and "proposed a further reward package for staff in return for changes to the way our people work".
He added: "It is disappointing that the Unite and RMT unions have rejected our proposal, and I urge them to continue with constructive discussions rather than threaten pointless industrial action."