Bletchley Topco Limited

Active12963634 Private limited company
Incorporated
20 October 2020 (6 years)
Previously known as
Hamsard 3600 Limited (until 15 December 2020)
This list may be incomplete. See all names on Companies House
Industry
Activities of other holding companies n.e.c. (64209)
Directors
Accounts type
Group
Region
South East
Address
Third Floor
33 Blagrave Street
Reading
RG1 1PW

Filing status

Accounts due
30 September 2027
Last accounts
31 December 2025
Conf. stmt due
2 November 2027
Last conf. stmt
19 October 2026

Officers 7 active

Officer details are public data from the Companies House register.

Director · Appointed 31 May 2026
Also at Avantus Technology Limited (proposed for strike-off), Avantus Limited (proposed for strike-off), Avantus Resources Limited (proposed for strike-off) · more companies
British
Born September 1971 (55)
Director · Appointed 19 September 2023
Also at Insider Topco Limited
British
Born June 1971 (55)
Director · Appointed 1 February 2023
Also at Marshall Acm Ltd, Avantus People Solutions Limited, Ciphr Benefits Limited · more companies
British
Born February 1970 (56)
Director · Appointed 1 February 2022
Also at Bletchley Midco Limited, Bletchley Bidco Limited, Ciphr Holdings Limited
British
Born March 1986 (40)
Director · Appointed 24 September 2021
Also at Omniplex Learning Topco Limited · more companies
British
Born May 1961 (65)
Director · Appointed 18 December 2020
British
Born August 1961 (65)
Director · Appointed 14 December 2020
Also at Bletchley Midco Limited, Hamsard 3572 Limited, Hamsard 3574 Limited · more companies
British
Born December 1983 (42)
Officer history (10 former)
31 May 2026
Appointed Hodgson, Richard Innes as Director
31 May 2026
Resigned Berry, Raymond Phillip as Director
27 March 2025
Resigned Fitzherbert, Toby Francis as Director
31 October 2023
Resigned Ellison, Tracy as Director
19 September 2023
Appointed Khan, Badrudin as Director
31 May 2023
Resigned Burns, David James as Director
1 February 2023
Appointed Lewis, Sion David as Director
31 December 2022
Resigned Oehlers, Allan James as Director
1 December 2022
Resigned Russell, Matthew as Director
18 July 2022
Appointed Burns, David James as Director
1 February 2022
Appointed Hawes, Claire as Director
1 February 2022
Appointed Ellison, Tracy as Director
24 September 2021
Appointed Hills, Kenneth Cumming as Director
1 September 2021
Appointed Berry, Raymond Phillip as Director
26 August 2021
Resigned Scott, Graeme Nicholas as Director
18 December 2020
Appointed Fitzherbert, Toby Francis as Director
18 December 2020
Appointed Oehlers, Allan James as Director
18 December 2020
Appointed Russell, Matthew as Director
18 December 2020
Appointed Scott, Graeme Nicholas as Director
18 December 2020
Appointed Berry, Christopher Graham as Director
14 December 2020
Appointed Roberts, Stephen Jamie as Director
14 December 2020
Resigned Squire Patton Boggs Secretaries Limited as Corporate Secretary
14 December 2020
Resigned Jones, Jonathan James as Director
14 December 2020
Resigned Squire Patton Boggs Directors Limited as Corporate Director
20 October 2020
Appointed Squire Patton Boggs Secretaries Limited as Corporate Secretary
20 October 2020
Appointed Jones, Jonathan James as Director
20 October 2020
Appointed Squire Patton Boggs Directors Limited as Corporate Director

Ownership 0 active

People and entities with significant control, from the Companies House PSC register

The company has declared that it has no person with significant control.
Former controllers (1)
14 December 2020
Ceased Squire Patton Boggs Directors Limited — Owns 75–100% of shares

Group structure 5 shown

Ownership group derived from the Companies House PSC register

Bletchley Topco Limited This company
Bletchley Midco Limited Owns 75–100% of shares
Bletchley Bidco Limited Owns 75–100% of shares
Ciphr Holdings Limited Owns 75–100% of shares
Bletchley Ebt & Nominee Limited Owns 75–100% of shares

Filings

Recent filings only. See the full history on Companies House

DateDescriptionMade Up ToPagesPDF
29 October 2026Confirmation statement with updates19 October 2026

Some other companies at this address

Bletchley Bidco Limited
Bletchley Ebt & Nominee Limited
Bletchley Midco Limited
Ciphr Group Limited
Ciphr Holdings Limited
Ciphr Limited

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