As a result, members of each scheme will be able to use 980 charge points located throughout the region, with some ambitious growth plans ahead. Source London aims to have 1,300 units installed in the capital in 2013, while Source East aspires to an 800-point network located within 25 miles of every business and resident in the East of England.

Nick Fairholme, TfL Director for Source London said: ‘The growth in the electric vehicle market is very encouraging and by building the infrastructure to support these vehicles, we expect them to become even more accessible.

‘London’s network of charge points guarantees our members are never far away from a charge point.  This arrangement between Source London and Source East means they can now comfortably travel outside London also safe in the knowledge that they are never too far from a charge point.’

Keith Bevis, managing director for EValu8, which manages the Source East programme, added: ‘Working to make electric car charging points more accessible to all our members is something that we are very passionate about, especially with the heritage the East of England has for developing green transport solutions. The roaming scheme means we will be able to continue to support and help motorists travel in a sustainable way.’