to promote the various services provided by train operating companies in South London under one umbrella brand, Overground Network. The scheme included station upgrades, signage and publicity, but promotion of the brand had ceased by 2007. London Rail also influences rail freight and freight depots in Greater London. In August 2007, London Rail published its 'Rail Freight Strategy' report. Both former Mayors of London Ken Livingstone and Boris Johnson have expressed the desire to gain control of all local rail services in Greater London in the future and make them part of the London Overground. London Overground has already taken over Lea Valley Lines services from Liverpool Street to Enfield Town, Cheshunt and Chingford and Romford to Upminster Line services on 31 May 2015. References London Overground Rail