Higham Hill Lib Dem ward councillors Peter Woollcott, Patrick Smith and Sean Meiszner, have been campaigning for a new route between Highams Park station and Tottenham Hale for years.
They argue that as the area is one of the most deprived in the country, and more than a mile from Walthamstow Central Station, a route is desperately needed.
The group met with Lib Dem London Assembly Member Caroline Pidgeon on Thursday who will lobby the mayor and Transport for London (TfL).
Mr Woollcott said the route would bring much benefit to the area.
He said: “There are proposals to build 240 homes in Sutherland Road, 600 in Banbury Park, and the possible Walthamstow Stadium development, so we need facilities in place now.