Private company
Who owns Defence Contractor Management and Operations Limited
One company in the researched set discloses a stake in Defence Contractor Management and Operations Limited, none of it sized by anyone who discloses it. Defence Contractor Management and Operations Limited is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
Defence Contractor Management and Operations Limited - Profile
- Type
- joint venture
- Based in
- United Kingdom
- Founded
- 1998
Defence Contractor Management and Operations Limited is an English private company, number 03664571, incorporated on 10 November 1998 and classified under the defence activities SIC code. It was called AWE Management Limited until March 2022 and was the industrial consortium vehicle that held the United Kingdom Ministry of Defence contract to manage the Atomic Weapons Establishment, running the Aldermaston and Burghfield nuclear warhead sites through its subsidiary AWE plc from 1 April 2000. Its shareholders were originally BNFL, Lockheed Martin and Serco, with Jacobs buying the BNFL stake in 2008. The Ministry of Defence exercised a contractual break in November 2020 and took AWE plc into direct government ownership on 1 July 2021, ending the management arrangement, after which the company was renamed. It now files dormant company accounts and is registered at Serco House in Hook, Hampshire.
Source
Defence Contractor Management and Operations Limited files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from Defence Contractor Management and Operations Limited, company 03664571 (Companies House), Defence Contractor Management and Operations Limited filing history (Companies House) and Atomic Weapons Establishment (Wikipedia). The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- Jacobs Solutions Inc.. UK (England and Wales) defence-related project entity, listed in Exhibit 21 at 24.50 percent, the lowest ownership stake among Jacobs's Exhibit 21 entities; written here as 24.50, not 0.245. Covered by the same combined 'Noncontrolling interests' balance described on the Jacobs (Thailand) row above; no individual carrying value is disclosed, so value_usd stays null. source
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of Defence Contractor Management and Operations Limited where a holder stated one, and are missing where no holder did.