Filing status
- Accounts due
- 31 December 2027
- Last accounts
- 31 March 2026
- Conf. stmt due
- 15 February 2027
- Last conf. stmt
- 1 February 2026
Carbon Sentinel Limited
- Incorporated
- 22 June 2012 (14 years)
- Previously known as
- National Grid Twenty Nine Limited (until 27 August 2015)This list may be incomplete. See all names on Companies House
- Industry
- Other business support service activities n.e.c. (82990)
- Directors
- Owned by
- Accounts type
- Dormant
- Region
- Greater London
- Address
- 1-3 StrandLondonWC2N 5EH
Officers 3 active
Officer details are public data from the Companies House register.
Director · Appointed 30 September 2025
British
Born December 1977 (48)
Director · Appointed 30 September 2025
British
Born November 1975
Hollis, Katie Suzanne
Secretary · Appointed 6 November 2023
Officer history (20 former)
30 September 2025
30 September 2025
30 September 2025
16 September 2024
1 December 2023
6 November 2023
Appointed Hollis, Katie Suzanne as Secretary
26 October 2023
Resigned Hagan, Lawrence as Secretary
2 October 2023
18 November 2022
Appointed Hagan, Lawrence as Secretary
18 November 2022
1 July 2021
1 July 2021
1 July 2021
30 November 2018
30 November 2018
Resigned Morgan, Alice as Secretary
13 July 2018
Resigned Whincup, David George as Secretary
30 November 2017
15 December 2016
Appointed Morgan, Alice as Secretary
1 July 2016
1 July 2016
27 April 2016
27 April 2016
31 March 2016
Resigned Rayner, Heather Maria as Secretary
1 May 2015
30 April 2015
10 September 2014
Appointed Whincup, David George as Secretary
2 January 2014
2 January 2014
30 November 2013
Resigned Forward, David Charles as Secretary
20 September 2013
12 July 2013
1 February 2013
1 February 2013
8 January 2013
7 January 2013
31 October 2012
31 October 2012
31 October 2012
24 July 2012
22 June 2012
22 June 2012
22 June 2012
Appointed Forward, David Charles as Secretary
22 June 2012
Appointed Rayner, Heather Maria as Secretary
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Corporate entity · Notified 6 April 2016
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Limited By Shares
Reg. no. 3932833
Group structure 33 shown
Ownership group derived from the Companies House PSC register
National Grid (US) Holdings Limited Owns 75–100% of shares
Natgridtw1 Limited Owns 75–100% of shares
National Grid (US) Investments 4 Limited Owns 75–100% of shares
National Grid (US) Partner 1 Limited Owns 75–100% of shares
National Grid Twelve Limited Owns 75–100% of shares
National Grid Holdings One PLC Owns 75–100% of shares
Icelink Interconnector Limited Owns 75–100% of shares
Lattice Group Limited Owns 75–100% of shares
National Grid Commercial Holdings Limited Owns 75–100% of shares
National Grid Energy Metering Limited Owns 75–100% of shares
National Grid Carbon Limited Owns 75–100% of shares
Carbon Sentinel Limited This company Owns 75–100% of shares
National Grid Distributed Energy Limited Owns 75–100% of shares
National Grid Electricity Distribution Holdings Limited Owns 75–100% of shares
National Grid Electricity Distribution PLC Owns 75–100% of shares
National Grid Holdings Limited Owns 75–100% of shares
National Grid Electricity Transmission PLC Owns 75–100% of shares
National Grid International Limited Owns 75–100% of shares
National Grid Hydrogen Limited Owns 75–100% of shares
National Grid Interconnector Holdings Limited Owns 75–100% of shares
Britned Development Limited Owns 25–50% of shares
National Grid Continental Limited Owns 75–100% of shares
National Grid Ifa 2 Limited Owns 75–100% of shares
National Grid Lion Link Limited Owns 75–100% of shares
National Grid Nautilus Limited Owns 75–100% of shares
National Grid North Sea Link Limited Owns 75–100% of shares
National Grid Viking Link Limited Owns 75–100% of shares
Nemo Link Limited Owns 25–50% of shares
National Grid Interconnectors Limited Owns 75–100% of shares
National Grid UK Limited Owns 75–100% of shares
National Grid Ventures Limited Owns 75–100% of shares
NGG Finance PLC Owns 75–100% of shares
Filings
Recent filings only. See the full history on Companies House
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 10 February 2026 | Confirmation statement with no updates | 1 February 2026 | ||
| 7 October 2025 | Appointment of a director | |||
| 7 October 2025 | Appointment of a director | |||
| 30 September 2025 | Termination of appointment of a director | |||
| 23 September 2025 | Accounts for a dormant company | 31 March 2025 |
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