"Post Office Telecommunications" teleconference unit, designed at the Post Office Research Station in Martlesham, made by DCA Design Consultants, Warwick, England, 1977. Constructed for the Post Office Silver Jubilee Exhibition in Hyde Park, London in 1977

In the 1970s the Post Office, which at that time was responsible for national telecommunications services in Britain, was interested in developing visual communications technology. This example of a ‘teleconference unit’ was built for display at the Queen's Sliver Jubilee Exhibition held in Hyde Park in 1977. Visitors to the exhibition could see video communication between two similar units. The case was made out of white resin painted yellow, meaning that the paint rubbed off quite easily.