Thousands of London Underground (LU) workers have voted to go on strike in a row over pay. The Rail Maritime and Transport (RMT) union has rejected a 4% pay rise followed by three annual inflation-linked increases.
Its members voted by 2,271 to 705 in favour of industrial action, with the turnout in the ballot being almost 50%.
An LU spokesman said the pay offer, which has been backed by three other trade unions, was "very fair".
'Huge benefit'
The offer has been accepted by the Transport Salaried Staffs Association and the British Transport Operators' Guild.
Drivers' union Aslef has confirmed they will put the offer to their members, with a recommendation to accept.
The RMT union executive is meeting in London to consider the result of the ballot and decide whether to name strike dates.
LU said it would continue discussions with the RMT in order to reach a settlement and avoid strike action.
London Mayor Ken Livingstone said: "A three-year pay deal on London Underground will be of huge benefit to staff and passengers alike.
"It will provide rising living standards for staff and good services to passengers."