London Underground

The RMT has ended talks aimed at averting a strike planned for Sunday by London Underground workers.

A 24-hour walk-out now looks set to go ahead across underground networks in the capital from 6pm.

While a second union is still meeting London Underground to discuss a dispute over jobs and ticket office closures, RMT, the biggest rail union, has walked away.

Officials from RMT and the Transport Salaried Staffs Association had met with LU under the chairmanship of the conciliation service Acas for a fourth day of talks.

But the RMT left the meeting without any sign of progress being made.

TSSA general secretary Manuel Cortes remained at Acas, making it clear he was determined to continue trying to break the deadlock.

London's Night Tube began on Friday with Sadiq Khan on board the first departure.

Roughly 50,000 people are expected to use the Night Tube service each weekend, with the number growing to 200,000 by the Autumn when the service extends to the Northern, Jubilee and Piccadilly lines.

The mayor chatted to passengers on the historic evening, telling one: "You're making history".

Talks aimed at breaking the deadlock over plans for an all-night Tube service in London are set to resume today.

Rail union leaders will meet London Underground bosses under the chairmanship of Acas, the conciliation service, for a fresh attempt to reach an agreement on pay and conditions.

The night Tube was originally planned to start in September but as negotiations dragged on it has been delayed, with no new date for its launch.

London mayor Boris Johnson cast fresh doubt over the planned service last week when he said it was not "absolutely critical".