Filing status
- Accounts due
- 30 September 2027
- Last accounts
- 31 December 2025
- Conf. stmt due
- 13 March 2027
- Last conf. stmt
- 27 February 2026
Tungsten Bidco Limited
- Incorporated
- 28 February 2019 (7 years)
- Industry
- Activities of other holding companies n.e.c. (64209)
- Owned by
- Biogen Inc.
- Accounts type
- Small
- Region
- South East
- Address
- Building 5 Foundation ParkRoxborough WayMaidenheadSL6 3UD
Officers 3 active
Officer details are public data from the Companies House register.
Director · Appointed 14 July 2025
British
Born April 1982 (44)
Hanby, Helen Elizabeth
Secretary · Appointed 8 August 2019
Director · Appointed 4 June 2019
British
Born June 1966 (60)
Officer history (7 former)
14 July 2025
14 July 2025
15 June 2023
15 June 2023
24 April 2020
21 April 2020
31 January 2020
Resigned Mill, Trevor Anthony as Director
8 August 2019
Appointed Hanby, Helen Elizabeth as Secretary
7 June 2019
Resigned Karp, Daniel Jeremy as Director
4 June 2019
2 April 2019
Appointed Karp, Daniel Jeremy as Director
2 April 2019
Appointed Mill, Trevor Anthony as Director
2 April 2019
2 April 2019
Resigned Dambach, Mike as Director
2 April 2019
Resigned Kramer, Robin as Director
28 February 2019
Appointed Dambach, Mike as Director
28 February 2019
Appointed Kramer, Robin as Director
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Biogen Inc.
Corporate entity · Notified 28 February 2019
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Public Listed Company
Reg. no. 33-0112644
Filings
Recent filings only. See the full history on Companies House
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 10 September 2026 | Director's details changed |
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