National Grid Interconnectors Limited
Registered name: NATIONAL GRID INTERCONNECTORS LIMITED
Part of National Grid PLC groupNational Grid Interconnectors Limited made £127m revenue and £52.9m profit in the year to 31 Mar 2026.
National Grid Interconnectors Limited’s revenue fell 14% to £127m in the year to 31 Mar 2026, with £52.9m profit. The company is classified under “transmission of electricity”; we hold 3 years of its filed accounts.
- Status
- Active
- Age
- 29 yrs · since 1997
- Type
- Private Limited Company
Key figures
Financial history
| Year to | 31 Mar 2024 | 31 Mar 2025 | 31 Mar 2026 |
|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L |
| Profit & loss | |||
| Revenue (turnover) | £179m | £147m | £127m |
| Operating profit | £188m | £72.1m | £61m |
| Profit before tax | £200m | £83.4m | £72m |
| Profit after tax | £175m | £63.5m | £52.9m |
| Profit (best available) | £175m | £63.5m | £52.9m |
| Employees (average) | — | — | — |
| Ratios | |||
| Profit margin | 97.5% | 43% | 41.6% |
| Growth (year on year) | |||
| Revenue growth | — | ▼17.8% | ▼13.8% |
| Profit growth | — | ▼63.7% | ▼16.7% |
| Balance sheet — indirect signals, not revenue | |||
| Net assets | — | — | — |
| Source | Accounts · bulk data Jan 2026 | Accounts · bulk data Jan 2026 | Accounts · bulk data Aug 2026 |
How the business works
- Profit margin
- 41.6%
- Profit ÷ revenue.
- Gross margin
- —
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- —
- Revenue ÷ average employees.
- Profit per employee
- —
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- —
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- —
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- —
- Money owed by customers. Low = customers pay quickly.
Balance-sheet signals
Year-on-year changes in filed balance-sheet items. They can hint at momentum (or investment) but are not revenue or profit and must not be read as such.
- Net assets
- —
- Now —
- Cash at bank
- —
- Now —
- Headcount
- —
- Now —
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- National Grid PLCultimate parent75–100%
- National Grid Holdings One PLC75–100%
- National Grid Interconnectors Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (10)
- Icelink Interconnector LimitedFigures not disclosed
- Lattice Group LimitedFigures not disclosed
- National Grid Carbon LimitedFigures not disclosed
- National Grid Distributed Energy LimitedFigures not disclosed
- National Grid Electricity Distribution Holdings LimitedFigures not disclosed
- National Grid Holdings LimitedFigures not disclosed
- National Grid Hydrogen LimitedFigures not disclosed
- National Grid Interconnector Holdings LimitedFigures not disclosed
- National Grid UK LimitedFigures not disclosed
- National Grid Ventures LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from accounts for the year to 31 Mar 2026 (profit £52.9m), from the Companies House accounts bulk data published Aug 2026. Spotted an error? Request a correction.
Updated from Companies House on 22 Oct 2026
Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.