When travelling from east of Barons Court and through Central London, Arnos Grove is the first surface station after the long tunnel section of the Piccadilly line.

Arnos Grove is the first surface station after the long tunnel section which starts east of Barons Court and passes through Central London.

[note 1] By 1923, a public campaign against the 1902 parliamentary ban emerged, and Frank Pick had risen to assistant managing director of the Underground group.

To help address this issue, Frank Pick gathered photographs of the congestion at Finsbury Park and distributed to the press.

Tunnel rings, cabling and concrete were produced in Northern England, while unemployed industrial workers there helped in the construction of the extension.

[14] On the night of 13 October 1940, during the Blitz, a lone German aircraft dropped a single bomb on houses to the north of Bounds Green station.

On 11 August 1948, a passenger train was derailed when the front and rear bogies of a carriage took different routes at a set of points at the station.

[10] Like the other stations Charles Holden designed for the extension, Arnos Grove was built in a modern European style using brick, glass and reinforced concrete and basic geometric shapes.

[7] A circular drum-like ticket hall of brick and glass panels rises from a low single-storey structure and is capped by a flat concrete slab roof.

The original design by Holden was detailed by Charles Hutton, who also had to amend the construction method from Sudbury Town tube station due to issues with leaking shuttering for the concrete roof discolouring the brickwork.

General repairs and redecoration were carried out, flooring was renewed, and better lighting, an improved CCTV security system and Help Points were installed, with the latter being suitable for people with limited hearing.

[26][27][28] During the refurbishment programme, all these heritage features were maintained as well:[20] A journey between Arnos Grove and Southgate typically takes slightly more than four minutes.