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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Parent entities and officers 28
  • 1
    Slye, Fintan Charles
    Born in March 1970
    Individual (6 offsprings)
    Officer
    2019-03-01 ~ now
    OF - Director → CIF 0
  • 2
    Nixon, Hannah
    Born in May 1973
    Individual (10 offsprings)
    Officer
    2019-04-01 ~ now
    OF - Director → CIF 0
  • 3
    Crackett, John
    Born in December 1958
    Individual (20 offsprings)
    Officer
    2025-07-01 ~ now
    OF - Director → CIF 0
  • 4
    Hagan, Lawrence
    Individual (66 offsprings)
    Officer
    2017-10-16 ~ 2019-04-01
    OF - Secretary → CIF 0
  • 5
    Plummer, Paul Jonathan
    Born in October 1965
    Individual (12 offsprings)
    Officer
    2019-04-01 ~ now
    OF - Director → CIF 0
  • 6
    Golby, Paul, Dr
    Born in February 1951
    Individual (46 offsprings)
    Officer
    2024-10-01 ~ now
    OF - Director → CIF 0
  • 7
    Favier-tilston, Claire
    Individual (1 offspring)
    Officer
    2021-05-11 ~ now
    OF - Secretary → CIF 0
  • 8
    Crawford, Janice Elliott
    Company Director born in September 1960
    Individual (4 offsprings)
    Officer
    2023-07-17 ~ 2025-03-31
    OF - Director → CIF 0
  • 9
    Merron, Gillian Joanna, Baroness
    Company Director born in April 1959
    Individual (2 offsprings)
    Officer
    2019-04-01 ~ 2024-07-10
    OF - Director → CIF 0
  • 10
    Davidson, Rachael Jennifer
    Solicitor born in July 1972
    Individual (13 offsprings)
    Officer
    2017-10-16 ~ 2018-01-08
    OF - Director → CIF 0
  • 11
    Burns, Clive
    Company Director born in March 1958
    Individual (265 offsprings)
    Officer
    2017-10-16 ~ 2019-04-01
    OF - Director → CIF 0
  • 12
    Tuckman, Claire Louise
    Company Director born in January 1975
    Individual (3 offsprings)
    Officer
    2019-04-01 ~ 2020-05-04
    OF - Director → CIF 0
  • 13
    Fitzgerald, Emma, Dr
    Born in January 1967
    Individual (11 offsprings)
    Officer
    2025-10-01 ~ now
    OF - Director → CIF 0
  • 14
    Quinn, Roisin Anne
    Company Director born in April 1981
    Individual (10 offsprings)
    Officer
    2020-03-09 ~ 2020-11-30
    OF - Director → CIF 0
  • 15
    Pate, Charles
    Born in October 1977
    Individual (2 offsprings)
    Officer
    2023-09-11 ~ now
    OF - Director → CIF 0
  • 16
    Burt, Duncan Bryden
    Company Director born in March 1976
    Individual (1 offspring)
    Officer
    2019-04-01 ~ 2020-02-17
    OF - Director → CIF 0
  • 17
    Smith, Gregg Edward, Mr.
    Accountant born in December 1976
    Individual (6 offsprings)
    Officer
    2020-05-04 ~ 2022-11-14
    OF - Director → CIF 0
  • 18
    Legge, Kayte Anne Eve
    Born in December 1979
    Individual (2 offsprings)
    Officer
    2019-04-01 ~ now
    OF - Director → CIF 0
  • 19
    Linwood, John Frederick
    Born in August 1962
    Individual (6 offsprings)
    Officer
    2020-06-16 ~ now
    OF - Director → CIF 0
  • 20
    Moran, Regina
    Company Director born in September 1962
    Individual (2 offsprings)
    Officer
    2020-08-01 ~ 2022-12-31
    OF - Director → CIF 0
  • 21
    Duffy, Clare Siobhan
    Born in October 1966
    Individual (1 offspring)
    Officer
    2024-10-01 ~ now
    OF - Director → CIF 0
  • 22
    Morgan, Alice Parker
    Company Secretary born in July 1983
    Individual (114 offsprings)
    Officer
    2018-01-08 ~ 2018-11-30
    OF - Director → CIF 0
  • 23
    Ackon, Chantal Marise
    Individual (4 offsprings)
    Officer
    2019-04-01 ~ 2019-10-04
    OF - Secretary → CIF 0
  • 24
    Barnes, Megan
    Company Secretary born in November 1987
    Individual (129 offsprings)
    Officer
    2018-11-30 ~ 2019-04-01
    OF - Director → CIF 0
  • 25
    Scott, Jayne Patricia
    Born in September 1963
    Individual (6 offsprings)
    Officer
    2025-02-03 ~ now
    OF - Director → CIF 0
  • 26
    Morrissey, Zoe Elise
    Solicitor born in May 1983
    Individual (4 offsprings)
    Officer
    2022-11-15 ~ 2024-10-01
    OF - Director → CIF 0
    Morrissey, Zoe Elise
    Individual (4 offsprings)
    Officer
    2019-05-23 ~ now
    OF - Secretary → CIF 0
  • 27
    1, Victoria Street, London, England
    Corporate (19 offsprings)
    Person with significant control
    2024-10-01 ~ now
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
    PE - Ownership of voting rights - 75% or moreCIF 0
  • 28
    NATIONAL GRID HOLDINGS ONE PLC
    - now 02367004
    NATIONAL GRID GROUP PLC - 2002-01-31
    THE NATIONAL GRID GROUP PLC - 2000-07-27
    THE NATIONAL GRID HOLDING PLC - 1995-11-17
    St Catherine's Lodge, Bearwood Road, Sindlesham, Wokingham, England
    Active Corporate (98 parents, 19 offsprings)
    Person with significant control
    2017-10-16 ~ 2024-10-01
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Ownership of voting rights - 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
parent relation
Company in focus

NATIONAL ENERGY SYSTEM OPERATOR LIMITED

Period: 2024-10-01 ~ now
Company number: 11014226
Registered names
NATIONAL ENERGY SYSTEM OPERATOR LIMITED - now 10841592
Standard Industrial Classification
96090 - Other Service Activities N.e.c.

Related profiles found in government register
  • NATIONAL ENERGY SYSTEM OPERATOR LIMITED
    Info
    NATIONAL GRID ELECTRICITY SYSTEM OPERATOR LIMITED - 2024-10-01
    Registered number 11014226
    St Catherine's Lodge Bearwood Road, Sindlesham, Wokingham RG41 5BN
    PRIVATE LIMITED COMPANY incorporated on 2017-10-16 (8 years 5 months). The status of the company number is Active.
    The last date of confirmation statement was made at 2025-10-15
    CIF 0
  • NATIONAL GRID ELECTRICITY SYSTEM OPERATOR LIMITED
    S
    Registered number 11014226
    1-3, Strand, London, England, WC2N 5EH
    Limited Company in Registrar Of Companies For England And Wales, England
    CIF 1
child relation
Offspring entities and appointments 1
  • 1
    ELEXON LIMITED
    - now 03782949
    BSCC LIMITED - 2000-05-31
    INTERCEDE 1442 LIMITED - 1999-07-13
    4th Floor 350 Euston Road, London
    Active Corporate (37 parents, 6 offsprings)
    Person with significant control
    2019-04-01 ~ 2024-10-01
    CIF 1 - Ownership of shares – 75% or more OE

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Contains public sector information retrieved at 22 March 2026 and licensed under the Open Government Licence v3.0.