Filing status
- Accounts due
- 30 September 2027
- Last accounts
- 31 December 2025
- Conf. stmt due
- 13 April 2027
- Last conf. stmt
- 30 March 2026
Encyclis Protos Holdco Limited
- Incorporated
- 30 March 2019 (7 years)
- Previously known as
- Covanta Green Protos Holding Limited (until 2 February 2023)This list may be incomplete. See all names on Companies House
- Industry
- Production of electricity (35110)
- Directors
- Owned by
- Accounts type
- Audit exemption subsidiary
- Region
- Greater London
- Address
- Floor 4Lynton House7-12 Tavistock SquareLondonWC1H 9LT
Charges
- Total
- 2
- Outstanding
- 2
- Part satisfied
- 0
- Satisfied
- 0
Officers 3 active
Officer details are public data from the Companies House register.
Sialvi, Hassan Mustafa
Secretary · Appointed 22 July 2024
Director · Appointed 22 July 2024
British
Born October 1984 (42)
Director · Appointed 14 October 2023
British
Born December 1969 (56)
Officer history (10 former)
22 July 2024
22 July 2024
22 July 2024
Appointed Sialvi, Hassan Mustafa as Secretary
22 July 2024
Resigned Gregory, Maria as Secretary
14 October 2023
14 October 2023
14 October 2023
14 October 2023
23 July 2023
Appointed Gregory, Maria as Secretary
23 July 2023
23 July 2023
Resigned Oyegoke, Toye as Secretary
21 June 2022
21 June 2022
21 June 2022
8 June 2022
30 March 2022
13 September 2021
13 September 2021
Appointed Oyegoke, Toye as Secretary
23 November 2020
23 November 2020
30 March 2019
30 March 2019
30 March 2019
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Limited Liability Company
Reg. no. 13920146
Holdings 1
Companies where Encyclis Protos Holdco Limited is registered as a person with significant control
Owns 75–100% of shares
Active
Former controllers (2)
8 June 2022
Ceased Green Empire Wte Holdings Limited — Owns 50–75% of shares
8 June 2022
Ceased Covanta Europe Investments Limted — Owns 25–50% of shares
Filings
Recent filings only. See the full history on Companies House
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 15 August 2026 | Other filing | |||
| 15 August 2026 | Other filing | |||
| 15 August 2026 | Accounts filing | |||
| 15 August 2026 | Audit exemption subsidiary accounts | 31 December 2025 | ||
| 31 March 2026 | Confirmation statement with updates | 30 March 2026 |
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