Private company

Coventry Ordnance Works

Logo: artist not identified, Public domain, via Wikimedia Commons3

British weapons manufacturer

Coventry Ordnance Works was a British manufacturer of heavy guns particularly naval artillery jointly owned by Cammell Laird & Co of Sheffield and Birkenhead, Fairfield Shipbuilding and Engineering Company of Govan, Glasgow and John Brown & Company of Clydebank and Sheffield. Its core operations were from a 60-acre (24 ha) site in Stoney Stanton Road in the English city of Coventry, Warwickshire. At the end of 1918 it became a principal constituent of a brand new enterprise English Electric Company Limited.2 It is part of Yarrow Shipbuilders Limited.1 It ceased to exist in 1925.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Jul 1905Founded1
  • HeadquartersCoventry1

Coventry Ordnance Works was a British manufacturer of heavy guns particularly naval artillery jointly owned by Cammell Laird & Co of Sheffield and Birkenhead, Fairfield Shipbuilding and Engineering Company of Govan, Glasgow and John Brown & Company of Clydebank and Sheffield. Its core operations were from a 60-acre (24 ha) site in Stoney Stanton Road in the English city of Coventry, Warwickshire.2

Corporate structure

Coventry Ordnance Works is part of a group headed by General Electric Company plc. 6 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Founded by Cammell Laird on Jul 1905.1

Consortium

The company, the Coventry Ordnance Works Limited, was formed in July 1905 by a consortium of British shipbuilding firms John Brown 50 percent, Cammell Laird 25 percent and Fairfield 25 percent with the encouragement of the British government, which wanted a third major arms consortium to compete with the duopoly of Vickers Sons & Maxim and Sir W G Armstrong Whitworth & Co to drive down prices. The new company bought (as from 1 January 1905, six months earlier) from Cammell Laird the ordnance business established in the late 1890s by H H Mulliner and F Wigley which had been moved by them in 1902 from Birmingham to the 60-acre (24 ha) site in Coventry's Stoney Stanton Road. The ordnance business had been bought from Mulliner and Wigley by Charles Cammell & Co., later Cammell Laird, in 1903.

Further expansion

By 1909 Coventry Ordnance Works had establishments, as well as at Coventry, at Scotstoun for manufacture of ordnance and gun equipment; for cordite shell loading and explosive magazines at Cliffe; and a gun-proving ground with a land range of 22,000 yards at Boston and was handling an order for 12 inch mountings of one of the new battleships. While to that time the works had been manufacturing the smaller sizes of Naval Guns and Mountings as well as Guns, Gun carriages, Ammunition and other military accessories, they had already extended their works since 1906 and had begun the manufacture of Guns and Turrets up to the largest sizes for both Battleships and Cruisers for the Admiralty. At Scotstoun a new factory had been built with a wet dock, pits and machinery for the erection and transhipping of the heaviest guns and mountings and hydraulic barbettes of the firm's own design but it was unused until 1911. A complete factory for the manufacture of Fuzes had also been installed in Coventry.

Admiralty

To this point Herbert Hall Mulliner (1861–1924) had continued as managing director, but after a long series of altercations with the Admiralty he was asked to resign, compensated, and replaced 3 February 1910 by the 46-year-old Rear-Admiral R. H. S. Bacon who had been the Admiralty's Director of Naval Ordnance since August 1907. By early February with Admiral Bacon on board and Mulliner off it the directors could report an order from the British Admiralty for the mountings of all the heavy guns of one of the latest battleships that brought into operation for the first time the most costly and most important part of the company's new plant ending a long difficult period for Coventry Ordnance Works. Early in 1915 Bacon was appointed to the Royal Marines.

From Wikipedia’s article on Coventry Ordnance Works, shared under CC BY-SA 4.0.4

Subsidiaries and ownership

Parent company

Owners

  • Cammell Laird

From Wikidata.1

Timeline

  1. 1925Dissolved Dissolved1
  2. Jul 1905Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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