Twenty extra night buses could be introduced when all-night Tube services begin in September.

Transport for London (TfL) has launched a consultation on the proposal, which would see 17 of the new services run throughout Friday and Saturday nights, with three running seven nights a week.

The aim is to enable night Tube travellers further options.

All of these new services would follow the same route and run between the same points as the day service.

TfL added it might not be necessary to run as many extra weekend buses on 17 out of 117 night bus routes because of the new Tubes.

These services would continue to operate at weekday levels.

Mike Weston, TfL's director of buses, said: “London's night buses carry more than 42 million passengers every year and demand has tripled since 1999, reflecting London's development as an increasingly 24-hour city.

'The introduction of the Night Tube will see journey times for customers cut by an average of 20 minutes, with some reduced by more than an hour.

"At the same time, night buses will continue to run frequently across London complementing Night Tube services, giving passengers more choice.”

Concern has been raised by members of the London Assembly that night buses could be preferable to passengers as they may travel closer to homes.