Talks at resolving a dispute which has led to a crippling strike on London Underground are to be held.
The development came as most Tube services were cancelled after 2,300 members of the Rail, Maritime and Transport (RMT) union walked out at 6pm on Monday for a 72-hour strike linked to the collapse of maintenance giant Metronet.
The union said it will meet Metronet, Transport for London and the company's administrator to try to resolve the bitter dispute over jobs and pensions.
General secretary Bob Crow said: "As a result of discussions ... with London Transport Commissioner Peter Hendy, talks will now take place.
"This is a positive development and we hope that Metronet and its administrator will now take our members' legitimate concerns seriously."
Mr Crow said Metronet and the administrator should now seriously address the concerns of workers affected by the financial collapse of the consortium.
"It is five weeks since we gave the company notice that we were balloting over the issues involved, yet there was no sense of urgency until it became clear that our members were determined to win the unequivocal guarantees we are seeking.
"Our members have shown their determination by delivering a rock-solid strike and, pending any positive outcome from (the) talks, it will remain on."
Most of the Tube network was at a standstill, causing travel chaos for millions of commuters and visitors to London.
