K6 telephone kiosk outside St Pancras Station

The K6 telephone kiosk outside St Pancras Station is a notable piece of 20th-century industrial design. Made of cast iron and painted red, it features long horizontal glazing in the door and sides, with crowns on the top panels that are applied rather than perforated. There are rectangular white display signs reading "TELEPHONE" beneath the shallow curved roof. The kiosk has modernised internal equipment.

This kiosk is situated at the south-west corner of the forecourt of the Grade I listed St Pancras Station, located on the north side of Euston Road, directly opposite Camden Town Hall, which is Grade II listed.

Designed by Giles Gilbert Scott in 1935 for the General Post Office to commemorate King George V's Silver Jubilee, the K6 is a streamlined and compact evolution of Scott's earlier K2 telephone kiosk design from 1924. Scott, a prominent British architect, is also known for significant works such as the Anglican cathedral of Liverpool and Battersea power station. The K6 kiosks represent a thoughtful blend of architectural tradition with modern technological needs. Over 70,000 K6 kiosks were produced, although many were replaced in the 1960s by simpler designs. Despite this, many K6 kiosks remain and continue to be iconic features in British streetscapes.