Commuters have been warned of serious disruption to public transport in London tomorrow and on Wednesday, with strike action likely to stop services across the entire Tube network.

The RMT union and London Underground are locked in last-ditch talks this morning aimed at averting the dispute, which centres around negotiations for new pay and working conditions.

However, RMT general secretary Bob Crow remained pessimistic about the chances of resolving the dispute, saying he had "no confidence" in London Underground management.

Transport for London says people using public transport in London should add extra time to their journeys during the strike period, and even avoid travelling during rush hours if possible.

Few, if any, Tube services are expected to run from Tuesday evening until Thursday morning.

Overland trains should run as normal, after a planned national strike due to run at the same time as the Tube strike was called off.

TfL is putting on extra buses to cope with an expected surge in demand for central London.

"Due to the strike, services are likely to be much busier than normal and we would ask that passengers please be patient and allow more time for their journeys," said TfL.

Docklands Light Rail services will run as normal and London Underground has also set up a free river boat service, running between Tower, Blackfriars, Waterloo, and Westminster Piers, every 15 minutes during the morning and evening peak.

For more information, check out Local London's guide to transport websites.