[1] In October 1961 the Sunday service was extended from Cubitt Town to Poplar replacing the withdrawn route 56.

[5][6] The 277 saw the withdrawal of through services to Poplar and restricted to Cubitt Town, Queen Hotel in 1974, during the reconstruction of what is now the Blue Bridge over the West India Dock entrance from the River Thames, passengers walking over a temporary footbridge until 1976 after Route 277A, a shuttle from the north side of the bridge to Poplar, was withdrawn.

[citation needed] In February 2009, drivers on the route were criticised by local residents for causing unnecessarily high noise and air pollution at the Highbury Corner terminus.

However the night service was retained, restoring the 'N' prefix N277 which was extended to Islington via Upper Street from Highbury.

A feature in Time Out magazine in March 2009 highlighted notable points along the route as the Vortex Jazz Club and Café Oto in Dalston, the Hackney Empire theatre, Broadway Market, London Fields and One Canada Square in Canary Wharf.