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The leader of Southwark council has called on the Prime Minister to “keep your promise” over the proposed £3 billion Bakerloo line extension.

Peter John asked Boris Johnson to remember the commitments he made to the extension during his time as mayor of London and make it a “top priority”.

Under the plans, the Bakerloo line would run to Lewisham via two new stations on Old Kent Road and through New Cross Gate.

While current Mayor Sadiq Khan and Transport for London remain committed to the project, campaigners warn that unless Treasury funding is secured the project is at risk.

In December 2015, Mr Johnson called it a “vital” transport link for people in south London that would spur jobs, homes and regeneration.

Southwark and Lewisham councils have so far gained the support of almost 18,000 people with their “Back the Bakerloo line” campaign.

TfL will next year seek permission from the Government to launch the project. If granted, construction could start in 2023 and be completed by 2029.

For more information visit: backthebakerloo.org.uk