[15] In 2007 plans to add step-free access to the station were consulted on[16] and a Transport and Works Act Order was granted.

[13] The platform walls once featured the distinctive and elegantly simple tiling schemes used by Holden on the underground stations constructed at this time.

[19][dead link‍] An unusual feature for a Northern line station is that both platforms are long enough to accommodate nine car trains instead of the usual seven.

A consequence of this arrangement was: that the front two cars could not be used by passengers intending to disembark at Tottenham Court Road from either direction.

The rear two cars ran empty south of Tottenham Court Road (Archway being the northern terminus at the time).

[21] All nine car operation was suspended on 6th September 1939 when the line was split into wo sections for the installation of flood gates just after World War II was declared.

When the original section of the Northern Line from Charing Cross to Golders Green and Archway (then Highgate) was opened in 1907, the terminus at Archway was provided with a scissors crossover just south of the station and the running lines beyond the north end of the platforms continued as separate dead-end sidings.

[note 1][22] The enlarged crossover tunnel remains although cable runs extend down its centre between the two tracks for most of its length.

Northern line trains generally operate between Morden or Battersea Power Station to High Barnet or Mill Hill East via the Charing Cross or the Bank branch.