A planned strike by drivers on one of London Underground's busiest lines has been called off.
Members of Aslef and the Rail, Maritime and Transport union on the Jubilee Line were due to walk out for 24 hours on Wednesday in a row over new rosters.
The action has been suspended to allow further talks to be held.
A second strike is still in place on 14 June, but talks today were said to be "constructive".
The Mayor of London, Sadiq Khan, said the development was good news for Londoners, businesses and visitors, adding: "This shows the difference that Transport for London talking constructively to staff and trade unions can make.
"The changes to the Jubilee line will improve services for commuters and I hope any differences can be resolved amicably.
"Since I became Mayor I have been determined that relations between TfL and hardworking staff and trade unions improve."
Nigel Holness, TfL's director of network operations for London Underground, said: "The new timetable on the Jubilee line is benefiting thousands of customers every day, boosting capacity and making journeys quicker and more comfortable.
"We have adhered to the agreements we have in place with our unions throughout this dispute and we are pleased that our customers will no longer be disrupted by unnecessary strike action on the Jubilee line tomorrow."
A spokesman for the conciliation service Acas said: "Following three days of talks at Acas, London Underground, Askel and RMT made sufficient progress for Wednesday's Jubilee Line strike to be called off."
Mick Whelan, general secretary of Aslef, added: "We welcome the agreement today that underpins the work/life balance in the arduous shift system that LU operates that was threatened by arbitrary changes.
"The additional guarantees given by the company today have allowed progress to be made.
"It should not have come to this and we hope the company will engage in future and not create uncertainty for our members and the travelling public."
