The frequency of trains on the Jubilee line will be increased from May this year, Mayor of London Boris Johnson has confirmed.
News of the frequency increase – which is due to take effect in May – was revealed by the Mayor in response to a question from London Assembly member Len Duvall.
Mr Duvall raised concerns with the Mayor about the likely impact on the Jubilee line of the forthcoming changes to Southeastern train services in connection with the redevelopment of London Bridge Station.
"Capacity on the Jubilee line is being increased," said Boris Johnson.
A services of 30 trains per hour (tph) was introduced at peak periods in spring 2012 after the long-delayed upgrade of the Jubilee line signalling system.
"From May this year, Transport for London will lengthen the peak period during which the 30tph operates, and increase off-peak services Monday-Saturday and most of Sunday to 24tph," said Mr Johnson.
At present, the maximum frequency on weekday daytimes is 21 trains per hour whilst on Sundays there are 20 trains an hour.
The Mayor continued: "In addition, a new 'Night Tube' service on Friday and Saturday nights will include Northern and Jubilee line services calling at London Bridge. Alongside the 24-hour and night bus services, this will give passengers an extensive and integrated service throughout the night."
It is 15 years since the Jubilee line extension opened in full.
In the longer term, Transport for London is proposing to acquire extra trains for the Jubilee line to allow frequencies to be raised further.