Four London Underground phone kiosks given Grade II-listed status

A blue K8 kiosk at Chorleywood station. The K8s housed an internal phone system for station staff. Photograph: The Historic England Archive

Four rare phone boxes on London Underground stations have been given Grade II-listed status by the government for their architectural and historic interest.

The phone boxes are among 11,000 K8 kiosks that were installed across the UK between 1968 and 1983. Only about 50 remain, mostly in Hull where they were part of an independent phone network rather than the property of British Telecom.