While the Northern line now connects some of the capital’s most popular spots in the inner city and beyond across its various branches, here’s how the service has changed over the years.
Officially opening in 1937, parts of the Northern line date back to the 1800s. The service was created after the City and South London Railway, and the Charing Cross, Euston and Hampstead Railway routes were combined.
Now encompassing a total of 52 stations, its latest extension by Transport for London in 2021 saw the route include Nine Elms and Battersea Power Station.
During its almost 90 years in service, the Northern line looks very different today than it did when it first opened.
We’ve found some pictures of the line’s carriages from over the years, showing how the line has evolved from the ‘50s to now.
1. 1956
Commuters on a train travelling from Tottenham Court Road to Morden in London. Photo: Getty Images
2. 1969
Rush hour scenes of a rather empty looking carriage. Photo: Getty Images
3. 1972
Greater London Council deputy leader Horace Cutler and GLC's London Transport Executive Sir Richard Way taking a ride on the Northern line. Photo: Getty Images
4. 1973
Labour Party leader of the Greater London Council Sir Reginald Goodwin joins commuters on the Northern line. Photo: Getty Images