Transport for London has been warned it's on a collision course with the unions, over plans to radically change the way the Tube operates. From next year every ticket office at every station will close, and 750 staff will lose their jobs.
As part of the shake up, some tube lines will run for 24 hours at the weekends. Our Political Correspondent Simon Harris reports.
Londoners can expect to be caught in the crossfire as union leaders declare war over today's massive cuts to London Underground.
The RMT claims London Underground is about to announce a programme of ticket office closures and the introduction of driverless trains.