Trollope & Colls
The Company was formed in 1903, out of the merger of George Trollope & Sons (founded by Joseph Trollope, a wallpaper hanger, in 1778) and Colls & Sons (founded by Benjamin Colls, a painter and decorator, in 1840).
The merged firm started to specialise in civil engineering and during the First World War undertook pioneering work on reinforced concrete. In 1969 the Company was acquired by Trafalgar House. By 1994 it was the largest contractor in the United Kingdom by turnover.
Projects undertaken by the company and its predecessors included: Her Majesty's Theatre completed in 1869, St Philip's Church, Battersea completed in 1870, the Institute of Chartered Accountants completed in 1892, Claridge's completed in 1897, the Baltic Exchange completed in 1903, the Debenhams Headquarters in Wigmore Street completed in 1908, Lloyds Bank in Lombard Street completed in 1931, the Ministry of Defence Main Building completed in 1959, Trawsfynndd power station completed in 1962, Hull Royal Infirmary completed in 1965, Northwick Park Hospital completed in 1970 and the Stock Exchange Tower completed in 1972.
- "Trollope & Colls". National Archives. Retrieved 27 July 2019.
- The British building industry since 1800 By Christopher Powell Page 220 Routledge, 1996, ISBN 978-0-419-20730-6
- Kvaerner Is Close to Bidding for Troubled Group: Lifeline for Trafalgar House? International Herald Tribune, 28 February 1996
- "The Last Places". 24 January 2013. Retrieved 27 July 2019.
- "Hull Royal Infirmary" (PDF). Royal Engineers Journal. 1 June 1965. p. i. Retrieved 27 July 2019.
- Trollope & Colls, City builders for 200 years 1778-1978, Published in 1978, Printed by Precision Press for Trollope & Colls, Marlow, Buckinghamshire