Morden tube station in the context of Charles Holden

The Northern line is a London Underground line that runs between North London and South London. It is printed in black on the Tube map. It carries more passengers per year than any other Underground line – around 340 million in 2019 – making it the busiest tube line in London. The Northern line is unique on the network in having two routes through Central London, two northern branches and two southern branches. Despite its name, it does not serve the northernmost stations on the Underground, though it does serve the southernmost station at Morden, the terminus of one of the two southern branches.

The line's northern termini, all in the London Borough of Barnet, are at Edgware and High Barnet; Mill Hill East is the terminus of a single-station branch line off the High Barnet branch. The two main northern branches run south to join at Camden Town where two routes, one via Charing Cross in the West End and the other via Bank in the City, continue and then join at Kennington in Southwark. At Kennington the line again divides into two branches, one to each of the southern termini – at Morden, in the borough of Merton, and at Battersea Power Station in Wandsworth.

Kennington is a London Underground station. It is located on Kennington Park Road in Kennington within the London Borough of Southwark. The station is on the Northern line, and is at the junction of the Charing Cross and Bank branches to the north and the Morden and Battersea Power Station branches to the south. Northbound, the next stations are Waterloo on the Charing Cross branch and Elephant & Castle on the Bank branch. Southbound, the next stations are Oval towards Morden and Nine Elms towards Battersea Power Station respectively. It is in both London fare zone 1 and 2.

The station was opened in 1890 as part of the world's first underground electric railway and its surface building remains largely unaltered. In the 1920s, the underground parts of the station were reconstructed so that the line could be extended and larger trains could be used. Two additional platforms and later several cross passages were provided for interchanges between the branches.