National Energy System Operator Limited company overview
National Energy System Operator Limited is a private limited company registered with company number 11014226. It was incorporated on 16 Oct 2017 and its current status is active.
The registered office is at St Catherine's Lodge Bearwood Road, Sindlesham, Wokingham, RG41 5BN. The company has 13 active officers. It was previously called National Grid Electricity System Operator Limited.
National Energy System Operator Limited upcoming deadlines
Year end accounts
Due 31 Dec 2026
Confirmation statement
Due 3 Nov 2027
Corporation tax payment
Due 1 Jan 2027
Dates are the ones Companies House holds for this company. Late accounts trigger automatic Companies House penalties starting at £150, and HMRC charges interest on late corporation tax.
National Energy System Operator Limited at a glance
9 years
Trading age
3,316 days since incorporation
13
Active officers
Fintan, Kayte, Hannah, Zoe
90
Filings on record
Latest: 20 Oct 2026
100/100
Filing health score
Accounts and statement up to date
Directors of National Energy System Operator Limited
Former officers
5 more officers are on the register. See all on Companies House
Nature of business (SIC codes)
96090
Other service activities not elsewhere classified
Allowable expenses for National Energy System Operator Limited
Based on National Energy System Operator Limited's SIC code (96090), these are typical tax-deductible expenses for a general business company. Claiming them lowers the profit you pay corporation tax on.
Vehicle & mileage
45p a mile for the first 10,000 business miles in a personal car.
Staff & director salaries
Wages, employer NI and pension contributions paid through PAYE.
Accountancy & legal fees
Bookkeeping, year-end accounts, tax advice and company secretarial costs.
Business insurance
Public liability, professional indemnity and employer's liability cover.
Phone & internet
Business mobile contracts, broadband and a share of home internet.
General guidance only — every expense must be wholly and exclusively for business. Ask an accountant
Tax guide for businesses like National Energy System Operator Limited
How much tax does a limited company pay?
UK companies pay corporation tax at 19% on profits up to £50,000, rising to 25% above £250,000, with marginal relief in between. Claiming every allowable expense reduces taxable profit.
Does a company like National Energy System Operator Limited need to register for VAT?
VAT registration is compulsory once taxable turnover passes £90,000 in any rolling 12 months. Many businesses register voluntarily to reclaim VAT on costs.
How much does an accountant cost for a limited company in Wokingham?
Fixed-fee accountants typically charge £60–£200 a month for a small limited company, covering year-end accounts, corporation tax and the confirmation statement.
Can directors of National Energy System Operator Limited pay themselves in dividends?
Most small company directors take a low salary plus dividends. Dividends are paid from profits after corporation tax, with an annual £500 dividend allowance.
Filing history
20 Oct 2026 · CS01
Confirmation statement made on 20 Oct 2026 with updates
29 Sep 2026 · TM01
Termination of appointment of Paul Jonathan Plummer as a director on 30 Jun 2026
23 Apr 2026 · CS01
Confirmation statement made on 23 Apr 2026 with updates
3 Apr 2026 · AP01
Appointment of Ms Sheena Mackay as a director on 1 Apr 2026
9 Mar 2026 · CH01
Director's details changed for Mrs Kayte Anne Eve Legge on 9 May 2025
28 Feb 2026 · SH19
Capital statement capital company with date currency figure
23 Feb 2026 · SH20
Legacy
13 Feb 2026 · CAP-SS
Legacy
13 Feb 2026 · RESOLUTIONS
Resolutions
15 Oct 2025 · CS01
Confirmation statement made on 15 Oct 2025 with updates
15 Oct 2025 · AP01
Appointment of Dr Emma Fitzgerald as a director on 1 Oct 2025
7 Oct 2025 · AA
Full accounts made up to 31 Mar 2025
17 Sep 2025 · CH01
Director's details changed for Mr Paul Jonathan Plummer on 10 Sep 2025
1 Jul 2025 · AP01
Appointment of Mr John Crackett as a director on 1 Jul 2025
1 Apr 2025 · TM01
Termination of appointment of Janice Elliott Crawford as a director on 31 Mar 2025
4 Feb 2025 · AP01
Appointment of Ms Jayne Patricia Scott as a director on 3 Feb 2025
14 Jan 2025 · CH01
Director's details changed for Ms Clare Siobhan Duffy on 8 Jan 2025
8 Dec 2024 · CH01
Director's details changed for Mrs Kayte Anne Eve O'neill on 1 Apr 2019
15 Oct 2024 · CS01
Confirmation statement made on 15 Oct 2024 with updates
9 Oct 2024 · MA
Memorandum articles
Showing the latest 20 of 90 filings. See the full history on Companies House
Accounting services for National Energy System Operator Limited
From tax to payroll, find accountants who look after every part of National Energy System Operator Limited’s finances.
Year-end accounts
Statutory accounts prepared and filed with Companies House on time, every year.
Corporation tax
CT600 returns filed with HMRC and tax planned so you only pay what you owe.
Payroll
Pay your team on time every month, with RTI submissions and pensions handled.
VAT & bookkeeping
Keep your books tidy and your VAT returns MTD-ready all year round.
Confirmation statement
Your annual confirmation statement checked and filed before the deadline.
Management accounts
Monthly or quarterly reports so you can see how the business is really doing.
More about National Energy System Operator Limited
About National Energy System Operator Limited
National Energy System Operator Limited is a UK private limited company based in Wokingham, registered at Companies House as company number 11014226 since 16 Oct 2017. Its listed activities include other service activities not elsewhere classified. This page brings together its public record — directors, registered office, nature of business and filing history — in one easy place.
National Energy System Operator Limited filings and compliance
Every UK limited company must file annual accounts, a confirmation statement and a corporation tax return each year. National Energy System Operator Limited has 90 filings on record. Keeping on top of these deadlines avoids automatic penalties from Companies House and HMRC, which start at £150 for late accounts.
Looking for an accountant in Wokingham?
Businesses like National Energy System Operator Limited often use a local accountant for year-end accounts, corporation tax, VAT and payroll. Compare fixed-fee, regulated accountants near Wokingham and get free quotes in minutes.
This page shows public information from Companies House. Director of National Energy System Operator Limited?
National Energy System Operator Limited – frequently asked questions
What is the company number of National Energy System Operator Limited?
National Energy System Operator Limited is registered at Companies House under company number 11014226.
When was National Energy System Operator Limited incorporated?
National Energy System Operator Limited was incorporated on 16 Oct 2017 as a private limited company.
Who are the directors of National Energy System Operator Limited?
Current officers are Fintan Charles Slye (director), Kayte Anne Eve Legge (director), Hannah Nixon (director), Zoe Elise Morrissey (secretary), John Frederick Linwood (director), Claire Favier-Tilston (secretary) and 7 more.
What does National Energy System Operator Limited do?
The company's registered nature of business (SIC) is 96090 – Other service activities not elsewhere classified.
Where is National Energy System Operator Limited registered?
The registered office address is St Catherine's Lodge Bearwood Road, Sindlesham, Wokingham, RG41 5BN.
Is National Energy System Operator Limited still trading?
According to its latest Companies House record the company status is active. Its most recent filing was confirmation statement made on 20 Oct 2026 with updates on 20 Oct 2026.