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On 22 August 1902, Kingston upon Hull Corporation was granted a licence under the Telegraph Act 1899 to operate a municipal telephone system in the Kingston upon Hull area, opening its first telephone exchange on 28 November 1904 at the former Trippett Street Baths, Wincolmlee: Link In 1911 the Post Office took over the National Telephone Company's system, but Kingston upon Hull Corporation was permitted to retain its own service. Since then, it provided the only municipal telephone service in the country. In 1987, it became Kingston Communications (Hull) plc, still owned 100% by the Council. In 1999 the company was partially floated on the stock exchange. In 2007 its name was changed to KCOM Group plc. On 4 April 2016, the company moved all of its brand under a single KCOM brand name. KCOM was acquired by MEIF 6 Fibre Ltd, a business unit of Macquarie Group, in August 2019. Further information in Wikipedia: Link KCOM's history: Link

The foundation stone for Telephone House, Nos.35-37 Carr Lane, was laid 18 September 1961, and the building was formally opened on 23 October 1964. Built for Hull Corporation Telephone Department, it replaced the former headquarters at Nos.7 to 11 Wincolmlee (formerly the Trippett Street Baths, 1850 to 1903), closed the same year and demolished in the 1970s. Link