By Jonathan Davies

The launch of the Night Tube service has been delayed, London Underground has said.

The 24-hour service was due to start on the Jubilee, Victoria, Piccadilly, Central and Northern lines on 12 September.

Rail unions have held two tube strikes in recent weeks, protesting against the impact on shift patterns and staff's work-life balance. Further strikes were planned for this week, but were called off after constructive negotiations.

Transport for London (TfL) said the Night Tube launch has been delayed to allow negotiations to reach a successful conclusion.

London Underground managing director Nick Brown said: “Further to the progress made in recent days with the trade unions and the suspension of strike action, we believe we are not far from an agreement that protects the work-life balance of our employees and is affordable, sustainable and fair.

“As such, we have decided to defer the introduction of Night Tube to allow more time for those talks to conclude. Our objective is to reach an agreement that ends this dispute and delivers the Night Tube for Londoners this autumn.”