Editing Northern line (section)

====Edgware Extension====
The Edgware extension used plans dating back to 1901 for the [[Charing Cross, Euston and Hampstead Railway#Hampstead Heath controversy|Edgware and Hampstead Railway]] (E&HR)<ref name=gazette_2>{{London Gazette |issue=27380 |date=26 November 1901 |page=8200}}</ref> which the UERL's subsidiary, the [[London Electric Railway]], had taken over in 1912.{{sfn|Horne|2009|p=28}} It extended the CCE&HR line from its terminus at Golders Green to Edgware in two stages: to [[Hendon Central tube station|Hendon Central]] in 1923 and to [[Edgware tube station|Edgware]] in 1924.{{sfn|Rose|2016}}{{sfn|Horne|2009|p=29}} The line crossed open countryside and ran mostly on viaduct from Golders Green to Brent and then on the surface, apart from a short tunnel north of Hendon Central.{{sfn|Horne|2009|p=29}} Five new stations were built to pavilion-style designs by [[Stanley Heaps]], head of the Underground's Architects Office, stimulating the rapid northward expansion of suburban developments in the following years.{{sfn|Day|Reed|2010|p=91}}