Exhibition area 1 - K7, KX100, and Booth 7A

The K7 phone box, seen first, was the General Post Office's first kiosk cast in aluminium. Designed by Neville Conder, six prototypes were cast and five of these entered public service in 1962. Although the prototypes continued in service for a further 20 years, the Post Office decided that they would prefer to continue to use cast-iron, to withstand the rigours of the weather.
The next kiosk on view is the KX100, introduced in 1985 as a fundamental redesign of the kiosk. Made of stainless steel and anodised aluminium, they did not require any routine painting and were lighter and easier to use than any previous design.
You can then see the bright yellow Booth 7A, introduced in 1980 to be a secure, vandal-resistant alternative to traditional kiosks. It was painted yellow to make it more visible, as it had no lighting of its own.