Geograph - photograph every grid square

A box junction is a traffic control measure designed to prevent gridlock at busy road junctions. The surface of the junction is marked with a criss-cross grid of diagonal painted lines and vehicles may not enter the area so marked unless their exit from the junction is clear; drivers may enter the box and wait when they want to turn right and are stopped from doing so only by oncoming traffic or by other vehicles waiting to turn right. Link

The A107 runs 5 miles through East London from Whitechapel [image no longer available] to Manor House TQ3287 : A503, A107 junction.
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The North London line (NLL) is a railway line which passes through the inner suburbs of west, north-west and north London, between Richmond in the south-west and Stratford in the east, avoiding central London. Its route is a rough semicircle. The line fully opened in 1869.
Wikipedia. Link

Hackney Central is a London Overground station on the North London line in Hackney. It is between Dalston Kingsland and Homerton and is in Travelcard Zone 2. The station and all trains serving it are operated by National Rail services.
The station is connected to Hackney Downs with a direct passenger walkway linking the two stations (replacing an earlier such link) that was opened in July 2015. This walkway means passengers do not have to exit on to the street in order to continue their onward journey.
Wikipedia: Link