Extra capacity on four Tube lines running through east London and longer trains on the Docklands Light Railway (DLR) are among the improvements to the capital’s transport network outlined in the Mayor of London’s draft business plan.

The report, due to be discussed by the Transport for London (TfL) board on Thursday, details a five-year plan set to be delivered by cutting “flabby” waste and making efficiencies of £800million a year.

Sadiq Khan’s proposals suggest resignalling a number of Tube lines to accommodate extra trains, boosting capacity on the Jubilee line by 17 per cent, and on the District and Hammersmith and City lines by 33pc.

The Central line will see a capacity boost of 60pc, with new trains arriving on the line in 2023.

The DLR, which has seen a 50pc rise in journeys over the past five years, will see £301m set aside to improve the network and fund 43 new, longer trains, boosting capacity by around 30pc.

Mr Khan said: “The greatest city in the world must also have a genuinely world-class transport system, and this is vital for the future success of London’s economy.

“In reorganising a flabby TfL and finding major efficiency savings within the organisation, we’re securing this record investment without burdening Londoners with further hikes in TfL fares.”