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Quantinuum Ltd
- Incorporated
- 1 July 2014 (12 years)
- Previously known as
- Cambridge Quantum Computing Limited (until 9 August 2023)
- Industry
- Other information technology service activities (62090)
- Directors
- Waseem Shiraz
- Owned by
- Quantinuum Inc.
- Accounts type
- Full
- Region
- Greater London
- Address
- Partnership HouseCarlisle PlaceLondonSW1P 1BX
Filing status
- Accounts due
- 30 September 2027
- Last accounts
- 31 December 2025
- Conf. stmt due
- 15 July 2027
- Last conf. stmt
- 1 July 2026
Officers 3 active
Officer details are public data from the Companies House register.
Shiraz, Waseem
Director · Appointed 1 August 2022
British
Born July 1978 (48)
Director · Appointed 17 November 2014
British
Born August 1962 (64)
Wells, Trevor
Secretary · Appointed 1 July 2014
Officer history (12 former)
1 August 2022
Appointed Shiraz, Waseem as Director
20 April 2022
Resigned Shiraz, Waseem as Director
1 March 2022
1 March 2022
1 March 2022
Appointed Shiraz, Waseem as Director
1 March 2022
Resigned Venkatarayalu, Suresh as Director
1 March 2022
Resigned Jesudason, Robert Dharshan as Director
1 March 2022
Resigned Koshiba, Mitsunobu as Director
11 February 2021
Appointed Venkatarayalu, Suresh as Director
23 November 2020
Appointed Jesudason, Robert Dharshan as Director
14 October 2020
Resigned Ritchie, Aaron Robert Thane, Mr. as Director
28 August 2020
1 November 2019
7 October 2019
1 September 2019
29 October 2018
Resigned Broomfield, Nigel Hugh Robert Allen, Sir as Director
1 July 2018
Appointed Koshiba, Mitsunobu as Director
6 November 2017
12 October 2017
Appointed Ritchie, Aaron Robert Thane, Mr. as Director
3 June 2016
Resigned Chang Rajii, Alberto Samuel as Director
10 November 2015
Appointed Chang Rajii, Alberto Samuel as Director
17 April 2015
17 November 2014
17 November 2014
Resigned Mahmood, Shahed as Director
14 November 2014
Appointed Broomfield, Nigel Hugh Robert Allen, Sir as Director
1 July 2014
Appointed Wells, Trevor as Secretary
1 July 2014
Appointed Mahmood, Shahed as Director
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Quantinuum Inc.
Corporate entity · Notified 4 June 2026
Owns 75–100% of shares
Holds 75–100% of voting rights
Corporation
Reg. no. 10478468
Former controllers (2)
4 June 2026
Ceased Honeywell International Inc — Owns 75–100% of shares
7 June 2017
Ceased TW Indus Limited — Owns 50–75% of shares
Filings 167
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 21 October 2026 | Statement of capital following an allotment of shares | |||
| 26 August 2026 | Full accounts | 31 December 2025 | ||
| 27 July 2026 | Cessation of a person with significant control | |||
| 27 July 2026 | Notification of a person with significant control | |||
| 27 July 2026 | Confirmation statement with updates | 1 July 2026 |
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