National Energy System Operator Limited

Reference number: 1019276

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Appointed representative

This firm does not hold FCA authorisation of its own, and acts under a principal firm, which is legally responsible for its regulated business.

Responsible principal firm

Product Partnerships Limited Reference number: 626349 Authorised View firm →
What does this mean?
  • An appointed representative (AR) can carry out regulated financial services, but is not directly authorised by the FCA. A principal firm holds the authorisation and is legally responsible for the AR's conduct.
  • National Energy System Operator Limited (FRN 1019276) is an AR of Product Partnerships Limited (FRN 626349). When you use National Energy System Operator's services, the FCA authorisation sits with the principal firm.
  • Example: if you take financial advice from National Energy System Operator, complaints and compensation usually follow the same rules as dealing with the principal, but this depends on the product and your circumstances.
  • Before you proceed, confirm contact details match the official FCA register for both firms. Scammers sometimes clone legitimate AR names and FRNs but use fake phone numbers and websites.

Website, phone number and address

Compare these against whatever you were given. Scammers clone real firm names and reference numbers but use their own phone number and website, so a detail that does not match the register is the clearest warning sign there is.

In the full report: 3 background checks, 1 thing worth a closer look

  • When neso.energy first appeared online, and whether it can receive email
  • What kind of line 0800 464 3621 is
  • Who else gives the postcode RG41 5BN
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Other names (1)

If you were contacted under any of these names, it is this firm.

  • National Grid Electricity System Operator Limited Former name

FCA permissions and consumer protection

  • Protection through the principal firm
    Protection works through Product Partnerships Limited, the principal firm responsible for this firm's regulated activity. FSCS cover and the Financial Ombudsman Service apply as they would to the principal.
  • Complaints Ombudsman, free
    You can refer a complaint about this firm to the Financial Ombudsman Service for free, whichever activity it relates to.

FCA disciplinary action and complaints

No FCA disciplinary action.

The Financial Ombudsman Service only publishes complaint figures for firms with 30 or more new complaints in six months, so there are none here for this firm.

Companies House record

The company behind the firm: its status, age, registered office and directors.

Company number
11014226
Company status
Active
Company type
Private limited company
Incorporated
16 October 2017 (9 years old)
Registered office
St Catherine's Lodge Bearwood Road, Sindlesham, Wokingham, RG41 5BN, England
Nature of business
  • Other service activities not elsewhere classified (SIC 96090)

Directors and company secretaries

Name Role Born Appointed Other companies
Fintan Charles Slye Director Mar 1970 1 Mar 2019 3 other companies
Kayte Anne Eve Legge Director Dec 1979 1 Apr 2019 None
Hannah Nixon Director May 1973 1 Apr 2019 2 other companies
John Frederick Linwood Director Aug 1962 16 Jun 2020 4 other companies
Charles Pate Director Oct 1977 11 Sep 2023 1 other company
Paul Golby (Dr) Director Feb 1951 1 Oct 2024 48 other companies
Clare Siobhan Duffy Director Oct 1966 1 Oct 2024 None
Jayne Patricia Scott Director Sep 1963 3 Feb 2025 5 other companies
John Crackett Director Dec 1958 1 Jul 2025 20 other companies
Emma Fitzgerald (Dr) Director Jan 1967 1 Oct 2025 None
Sheena Mary Mackay Director May 1961 1 Apr 2026 3 other companies
Zoe Elise Morrissey Secretary Not published 23 May 2019 –
Claire Favier-Tilston Secretary Not published 11 May 2021 –

Other companies run by these 11 directors

A firm is run by people, and their other companies are their track record: what they built, what closed, and anything that failed. It is the check most people never think to make.

other companies
82
closed down
34
went insolvent
1

In the full report: all 82 companies, named

  • What each company does, and whether it is still trading
  • Which of these 11 directors sit on each board, and since when
  • The one that went into liquidation or administration
  • The 3 on the FCA register
  • The 4 companies these 11 directors run together
  • All 24 people who have ever been directors, with their dates
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Key dates in its history

National Energy System Operator’s history from the FCA register and Companies House, newest first.

Key events (6) All events (43)

2024

30 October 2024

  • Changed its registered name from "National Grid Electricity System Operator Limited"

FCA register

21 October 2024

  • Became an appointed representative

FCA register

1 October 2024

  • National Grid Holdings One PLC gave up control
  • The Secretary Of State For Energy Security And Net Zero took control (75–100% of shares)

Companies House

2017

16 October 2017

  • Incorporated at Companies House
  • National Grid Holdings One PLC took control (75–100% of shares)

Companies House

In the full report: all 43 events

  • All 43 events in its history (6 shown here)
  • Every director appointment and resignation: 37
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Firms connected to National Energy System Operator

Other FCA-listed firms that share a director, phone number or address with National Energy System Operator. A link shows who the firm is tied to, not whether either can be trusted.

past links
3

In the full report: all 0 connected firms, named

  • 3 past links through former directors
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Get the full report on National Energy System Operator

Everything on this page, plus everything locked above, in one dated PDF you can keep, file or send on.

  • 82 other companies its directors have run, named
  • 3 background checks on its contact details, 1 flagged
  • All 43 events in its history

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Frequently asked questions about this firm

Is National Energy System Operator Limited FCA authorised?
National Energy System Operator Limited (FRN 1019276) is not directly authorised. It is an appointed representative acting under the responsibility of a directly authorised principal firm.
What does appointed representative mean for National Energy System Operator?
An appointed representative (AR) can carry out regulated financial services, but is not directly authorised by the FCA. A principal firm holds the authorisation and is legally responsible for the AR's conduct. National Energy System Operator Limited (FRN 1019276) is an AR of Product Partnerships Limited (FRN 626349). When you use National Energy System Operator's services, the FCA authorisation sits with the principal firm. Example: if you take financial advice from National Energy System Operator, complaints and compensation usually follow the same rules as dealing with the principal, but this depends on the product and your circumstances. Before you proceed, confirm contact details match the official FCA register for both firms. Scammers sometimes clone legitimate AR names and FRNs but use fake phone numbers and websites.
What is National Energy System Operator’s phone number and website?
The FCA register lists the phone number 0800 464 3621 and the website neso.energy for National Energy System Operator. If you were given different contact details, use these to check with the firm before going any further.
Is National Energy System Operator a scam or clone?
National Energy System Operator is a genuine FCA-listed firm, and the FCA has published no warnings about fake versions of it. Scammers do copy real firms, though, so check that any contact details you were given match the ones on the register.
Is my money safe with National Energy System Operator?
Protection works through Product Partnerships Limited, the principal firm responsible for National Energy System Operator's regulated activity. FSCS cover and the Financial Ombudsman Service apply as they would to the principal.
Who owns National Energy System Operator?
Companies House lists one person with significant control of National Energy System Operator: The Secretary Of State For Energy Security And Net Zero (75–100% of shares). Before that, it was controlled by National Grid Holdings One PLC.
Who runs National Energy System Operator?
Companies House lists 11 directors of National Energy System Operator: Fintan Charles Slye, Kayte Anne Eve Legge, Hannah Nixon, John Frederick Linwood, Charles Pate, Paul Golby (Dr) and 5 more.
How long has National Energy System Operator been in business?
The company was formed on 16 October 2017.
Does National Energy System Operator use any other names?
It has previously used the name National Grid Electricity System Operator Limited.

Sources and links

The full report on National Energy System Operator Limited

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