STATION staff on London’s Tube network announced yesterday they will refuse to take any overtime until further notice, as unions savaged cloth-eared Tory London Mayor Boris Johnson for refusing to negotiate on plans to axe over 900 jobs.

The news came as tube drivers who shut down the crucial Central line last week announced they will strike again on September 17, if transport bosses maintain their silence over workplace bullying.

In the latest stage of its ongoing campaign of industrial action, rail union RMT will instruct booking office clerks, platform attendants and other station-based workers to not work any overtime from September 3. All station supervisors will be told to withdraw from development courses and assessments.

Under plans spearheaded by Mr Johnson, every ticket office on the tube will close by December 2015. RMT says the programme will see 953 jobs shed — and thousands more could see their pay packets pilfered as their jobs are downgraded.

RMT acting general secretary Mick Cash blasted Mr Johnson for refusing to negotiate, saying managers were already implementing cut-backs.

He said: “This next phase of action has been called for the clear and simple reason that London Underground has failed to engage in serious discussions over cash-led cuts to jobs, services and safety.

“RMT has repeatedly demanded meaningful talks with London Underground but the past four months has proved that that demand is falling on deaf ears.

Train drivers’ union Aslef revealed TfL managers had failed to contact them to discuss workers’ grievances since last week’s action on the Central and Waterloo and City lines.

Aslef organiser Finn Brennan said: “The issues at the heart of this dispute — treatment of staff, failing to stick to agreements made and cuts in safety training — aren’t going to go away.”

TfL chief operating officer Phil Hufton insisted managers were in “constant dialogue” with unions.

“The only way to resolve the issues raised is to continue talking and not threatening further industrial action,” he said.

Mr Brennan said there was no direct link between the Aslef and RMT disputes, but that “both are happening in the same context.”

“People are fighting back over different issues in different ways,” he added.