Website & contact details
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Mimecast Bidco Limited
- Incorporated
- 30 November 2021 (4 years)
- Previously known as
- Magnesium Bidco Limited (until 1 November 2022)
- Industry
- Activities of other holding companies n.e.c. (64209)
- Directors
- Owned by
- Accounts type
- Full
- Region
- Greater London
- Address
- Floor 41 Finsbury AvenueLondonEC2M 2PF
Filing status
- Accounts due
- 31 December 2026
- Last accounts
- 31 March 2025
- Conf. stmt due
- 13 December 2026
- Last conf. stmt
- 29 November 2025
Charges
- Total
- 2
- Outstanding
- 2
- Part satisfied
- 0
- Satisfied
- 0
Officers 3 active
Officer details are public data from the Companies House register.
Director · Appointed 15 October 2025
British
Born March 1968 (58)
Director · Appointed 30 November 2023
American
Born January 1974 (52)
Dollase, Christopher
Secretary · Appointed 1 February 2023
Officer history (9 former)
15 October 2025
15 October 2025
31 May 2025
30 November 2023
29 November 2023
1 February 2023
Appointed Dollase, Christopher as Secretary
31 January 2023
Resigned Nault, Robert as Secretary
1 November 2022
20 May 2022
19 May 2022
19 May 2022
19 May 2022
19 May 2022
Appointed Nault, Robert as Secretary
19 May 2022
19 May 2022
19 May 2022
19 May 2022
30 November 2021
30 November 2021
30 November 2021
30 November 2021
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Corporate entity · Notified 30 November 2021
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Limited By Shares
Reg. no. 13772362
Holdings 1
Companies where Mimecast Bidco Limited is registered as a person with significant control
Owns 75–100% of shares
Active
Filings 55
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 2 January 2026 | Full accounts | 31 March 2025 | ||
| 11 December 2025 | Confirmation statement with no updates | 29 November 2025 | ||
| 15 October 2025 | Appointment of a director | |||
| 15 October 2025 | Termination of appointment of a director | |||
| 4 June 2025 | Change of details for a person with significant control |
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