Papers of the Telegraph Construction and Maintenance Company Limited. The main series consist of contracts including for the supply, laying and repair of cables (TCM/6), cable engineers' logbooks (TCM/8) and ships' logbooks (TCM/10). Other records include memorandum and articles of association 1964-1920, papers relating to the SS GREAT EASTERN and the first Atlantic cables, publicity material and books and pamphlets. The collection also contains records of the Gutta Percha Company, H W Jewesbury and Company and personal papers of Willoughby Smith.

Records of the African Direct Telegraph Company Limited, comprising papers relating to the formation of the company; minutes and papers of board meetings; annual reports and accounts; ledgers and journal.

Records of Associated Cable Companies, comprising accounts, journals and cash books.

Records of the British Australian Telegraph Company Limited comprising minutes of annual general meetings, meetings of the board and meetings of liquidators.

Minutes of annual general meetings of the China Submarine Telegraph Company Limited.

Records of the Eastern Extension, Australasian and China Telegraph Company Limited comprising Directors' annual reports and accounts, photographs of Javanese villages and papers regarding the new issue of shares.

Europe and Azores Telegraph Company Limited records comprise minutes of Board meetings and Annual General Meetings, Directors' annual reports and accounts, details of balance sheets, a journal, ledgers and a private ledger.

River Plate Telegraph Company Limited records comprise minutes of board meetings, including directors' annual reports and accounts and a ledger.

West African Telegraph Company Limited records comprise minutes and agendas of board meetings, and of annual general meetings, directors' annual reports and accounts, balance sheets, journal, ledgers and a map showing telegraphic communication lines around the coast of Africa.

Papers of Professor Colin Cherry, [1928]-1981, comprising biographical papers, 1935-1981, notably index of reports on experiments at Northampton Polytechnic, 1935-1936; press cuttings, 1961-1974;
work diaries, 1962-1977; scientific notes and diagrams, [1928]-1950, mainly relating to elastic field analogies, periodic structures, transformers, electric and magnetic circuits;
papers whilst with Imperial College Electrical Engineering Department, 1953-1977, comprising papers relating to lectures, tutorials, seminars, symposiums, minutes and correspondence relating to an undergraduate group project scheme; papers relating to postgraduate lectures, 1950-1979, notably concerning circuit theory, communication; correspondence with staff, lectures for the London School of Economics, and Imperial College groups, 1951-1978; correspondence and reports relating to research projects and grants in the Communications Section, 1949-1977, including for stammering, communication developments and population, telephone services; research papers and notes of students, 1968-1978, correspondence with students, 1947-1971, concerning higher degrees, 1957-1967; correspondence and papers, largely concerning outside lectures, conferences and visits, 1948-1979, with professional, technical and educational institutions, societies, clubs, publishers, companies and some individuals; correspondence with the Institution of Electrical Engineers, 1946-1976, including notes and scripts;
unpublished papers, 1952-1962; correspondence relating to book publications, 1952-1978; published scientific papers and articles, 1940-1977; typescript of chapters of The Age of Access: Information Technology and Social Revolution , correspondence with the publishers, 1978-1979; recordings of talks and lectures, 1963-1976.

Minutes of board meetings of the British Indian Submarine Telegraph Company Limited.

Minutes of the Companhia Telegrafica Platino Brasileira, later the London Platino Brazilian Telegraph Company Limited.

Reports of the Deutsche See Telegraphen Gesellschaft.

Records of the Direct Spanish Telegraph Company Limited comprising memorandum and articles of association with a special resolution.

Eastern Telegraph Company Limited records comprise minutes of joint committee meetings, indexes to board minute books and an "authority book" containing papers concerning share issues and the payment of dividends.

Great Western Telegraph Company Limited records comprise rough minutes only.

Mediterranean Extension Telegraph Company Limited records, which comprise minutes and directors' annual reports and accounts.

Pacific and European Telegraph Company Limited records comprise of memorandum and articles of association, agreements, minutes of Board meetings, minutes of annual general meetings, minutes of a meeting of debenture holders and prospectus.

Records of the Globe Telegraph and Trust Company Limited, with records of predecessor and subsidiary organisations as listed below. The records include: minutes and papers presented at meetings, annual reports, constitutional documents, deeds, reports, financial records, administrative files, staff magazines and histories. Deeds which survive from 1717 pre-date the establishment of the business.

Predecessor/subsidiary companies with records in this collection:
Globe Telegraph and Trust Co Ltd;
Aberdeen, Ceylon and Eastern Trust Ltd;
Aberdeen, Edinburgh and London Trust Ltd;
African Direct Telegraph Co Ltd;
Associated Cable Companies;
British Australian Telegraph Co Ltd;
British Indian Extension Telegraph Co Ltd;
British Indian Submarine Telegraph Co Ltd;
Cable and Wireless (Holding) Ltd;
Cable and Wireless Ltd;
Cables Investment Trust Ltd;
China Submarine Telegraph Co Ltd;
Companhia Telegrafica Platino Brasileira;
Connaught Trust Ltd;
Deutsche See Telegraphen Gesellschaft;
Direct Spanish Telegraph Co Ltd;
Eastern and South African Telegraph Co Ltd;
Eastern Extension, Australasia and China Telegraph Co Ltd;
Eastern Telegraph Co Ltd;
Electra House Ltd;
Europe and Azores Telegraph Co Ltd;
Falmouth, Gibraltar and Malta Telegraph Co Ltd;
Great Western Telegraph Co Ltd;
Marseilles, Algiers and Malta Telegraph Co Ltd;
Mediterranean Extension Telegraph Co Ltd;
Pacific and European Telegraph Co Ltd;
River Plate Telegraph Co Ltd;
Share Investment Trust;
Victoria Embankment Properties Ltd;
West African Telegraph Co Ltd.

Records of the British Indian Extension Telegraph Company Limited comprising minutes of board meetings, annual general meetings and liquidators; and an agreement.

Records of Cable and Wireless Limited, comprising reports of the managing committee, finance committee and investment committee; reports of a tour of inspection of Mediterranean telegraphic communications; and papers relating to Sir Edward Wilshaw, chairman.

Falmouth, Gibraltar and Malta Telegraph Company Limited records comprise minutes and agendas of Board meetings and Minutes of joint committee meetings.

This series encompasses the surviving records of a number of early domestic and international telegraph companies which pioneered the development and growth of the public telegraph network.

Records of the Union of Post Office Workers, comprising records of several local branches of the Union and an interesting variety of branch newsletters and journals. These reflect the wide range of activities which once came under the Post Office, such as the cable room branch and the telephonists branch; and also include mutual benefit societies and benevolent funds.

Records of Cable and Wireless (Holding) Limited. The records comprise of Court of Directors minutes and presented papers, Committees including Managing Directors minutes, Committee reports to the Board, Annual General Meetings minutes, verbatim reports of ordinary and extraordinary general meetings, annual reports and accounts, balance sheets, cash books, journals, purchases and sales journals, financial statements, investment and general ledgers, and summary list of investments.

Records of the Eastern and South African Telegraph Company Limited comprising minutes, Directors' annual accounts, balance sheets, general ledgers, cash books and journals.

Marseilles, Algiers and Malta Telegraph Company Limited records comprise minutes of board meetings.