A shorter route to Edmonton was provided by the GER in 1872, from Bethnal Green via Hackney Downs and Stoke Newington, which opened on 27 May; the section via Seven Sisters and Lower Edmonton, at a new high-level station provided adjacent to the old low-level station, opened on 22 July.

The old line between Angel Road and Lower Edmonton was closed to passenger trains in 1939, except for occasional diversionary traffic including the period in the 1950s when the rest of the local network was being electrified under the Eastern Region; the line closed completely in 1964 and the track was removed soon after.

[4] Electrification of the lines via Seven Sisters to Hertford East, Enfield Town and Bishops Stortford, plus the Chingford branch, were completed in 1960.

[5] This included services between Liverpool Street and Enfield Town, Cheshunt, and Chingford, which were transferred from Greater Anglia to London Overground in 2015.

[6] On 25 August 2023, TFL announced that it would be giving each of the six Overground services unique names by the end of the following year.

[7][8] On 15 February 2024, it was confirmed that the Lea Valley section would be named the Weaver line and would be coloured maroon on the updated network map.

[9] The weaving and textile industry (Colloquially "the Rag Trade") was a major employer in the East End districts (such as Shoreditch, Spitalfields, Haggerston, Hackney and Bethnal Green) close to the Liverpool Street terminus.

[10] Walthamstow, an area on the lines' Chingford branch, was home to the prominent textile artist William Morris.

[11] Over the years much of the industry’s workforce would be made up of further waves of migrants from overseas including Ireland, Bangladesh and Jewish refugees from the Russian Empire.

[13] The Tottenham Hale–West Anglian route was planned to become part of Crossrail 2 to Cheshunt, Broxbourne and Hertford East.