| Schedule of disaggregation of revenue from contracts with customers |
| | | | | | | | | | | | | | | | | | | | | | | | Revenue for the six months ended 30 September 2026 | UK Electricity Transmission £m | UK Electricity Distribution £m | New England £m | New York £m | National Grid Ventures £m | Other £m | Total £m | | Revenue under IFRS 15 | | | | | | | | | Transmission | 1,706 | | — | | 50 | | 221 | | 333 | | — | | 2,310 | | | Distribution | — | | 882 | | 1,553 | | 2,861 | | — | | — | | 5,296 | | | | | | | | | | Other1 | 16 | | 35 | | 5 | | 9 | | 6 | | 3 | | 74 | | | Total IFRS 15 revenue | 1,722 | | 917 | | 1,608 | | 3,091 | | 339 | | 3 | | 7,680 | | | Other revenue | | | | | | | | | Generation | — | | — | | — | | — | | 211 | | — | | 211 | | Other2 | 44 | | 2 | | 22 | | 16 | | (57) | | 78 | | 105 | | | Total other revenue | 44 | | 2 | | 22 | | 16 | | 154 | | 78 | | 316 | | | Total revenue before exceptional items | 1,766 | | 919 | | 1,630 | | 3,107 | | 493 | | 81 | | 7,996 | | | | | | | | | | Exceptional items3 | — | | — | | — | | — | | — | | 142 | | 142 | | | Total revenue | 1,766 | | 919 | | 1,630 | | 3,107 | | 493 | | 223 | | 8,138 | |
| | | | | | | | | | | | | | | | | | | | | | | | Geographic split of revenue for the six months ended 30 September 2026 | UK Electricity Transmission £m | UK Electricity Distribution £m | New England £m | New York £m | National Grid Ventures £m | Other £m | Total £m | | Revenue under IFRS 15 | | | | | | | | | UK | 1,722 | | 917 | | — | | — | | 333 | | — | | 2,972 | | | US | — | | — | | 1,608 | | 3,091 | | 6 | | 3 | | 4,708 | | | Total IFRS 15 revenue | 1,722 | | 917 | | 1,608 | | 3,091 | | 339 | | 3 | | 7,680 | | | Other revenue | | | | | | | | | UK | 44 | | 2 | | — | | — | | (61) | | 210 | | 195 | | | US | — | | — | | 22 | | 16 | | 215 | | 10 | | 263 | | | Total other revenue | 44 | | 2 | | 22 | | 16 | | 154 | | 220 | | 458 | | | Total revenue | 1,766 | | 919 | | 1,630 | | 3,107 | | 493 | | 223 | | 8,138 | |
1.The UK Electricity Transmission and UK Electricity Distribution other IFRS 15 revenue principally relates to engineering recharges, which are the recovery of costs incurred for construction work requested by customers, such as the re-routing of existing network assets. 2.Other revenue, recognised in accordance with accounting standards other than IFRS 15, includes net fair value gains and losses in respect of investments in our National Grid Partners business, rental income, income arising in connection with the Transition Services Agreements in place following the sale of the ESO, and an adjustment to NGV revenue in respect of the interconnector cap and floor and Use of Revenue regimes constructed by Ofgem. 3.Exceptional items included in revenue relate to a fair value gain recognised on an investment held by NG Partners. Further details are provided in note 4. | | | | | | | | | | | | | | | | | | | | | | | | Revenue for the six months ended 30 September 2025 | UK Electricity Transmission £m | UK Electricity Distribution £m | New England £m | New York £m | National Grid Ventures £m | Other £m | Total £m | | Revenue under IFRS 15 | | | | | | | | | Transmission | 1,293 | | — | | 49 | | 163 | | 423 | | — | | 1,928 | | | Distribution | — | | 860 | | 1,421 | | 2,477 | | — | | — | | 4,758 | | | | | | | | | | Other1 | 13 | | 34 | | 4 | | 8 | | 14 | | 2 | | 75 | | | Total IFRS 15 revenue | 1,306 | | 894 | | 1,474 | | 2,648 | | 437 | | 2 | | 6,761 | | | Other revenue | | | | | | | | | Generation | — | | — | | (1) | | — | | 178 | | — | | 177 | | Other2 | 100 | | 2 | | 20 | | 19 | | (34) | | 20 | | 127 | | | Total other revenue | 100 | | 2 | | 19 | | 19 | | 144 | | 20 | | 304 | | | Total revenue | 1,406 | | 896 | | 1,493 | | 2,667 | | 581 | | 22 | | 7,065 | |
| | | | | | | | | | | | | | | | | | | | | | | | Geographic split of revenue for the six months ended 30 September 2025 | UK Electricity Transmission £m | UK Electricity Distribution £m | New England £m | New York £m | National Grid Ventures £m | Other £m | Total £m | | Revenue under IFRS 15 | | | | | | | | | UK | 1,306 | | 894 | | — | | — | | 423 | | — | | 2,623 | | | US | — | | — | | 1,474 | | 2,648 | | 14 | | 2 | | 4,138 | | | Total IFRS 15 revenue | 1,306 | | 894 | | 1,474 | | 2,648 | | 437 | | 2 | | 6,761 | | | Other revenue | | | | | | | | | UK | 100 | | 2 | | — | | — | | (38) | | 15 | | 79 | | | US | — | | — | | 19 | | 19 | | 182 | | 5 | | 225 | | | Total other revenue | 100 | | 2 | | 19 | | 19 | | 144 | | 20 | | 304 | | | Total revenue | 1,406 | | 896 | | 1,493 | | 2,667 | | 581 | | 22 | | 7,065 | |
1.The UK Electricity Transmission and UK Electricity Distribution other IFRS 15 revenue principally relates to engineering recharges, which are the recovery of costs incurred for construction work requested by customers, such as the re-routing of existing network assets. 2.Other revenue, recognised in accordance with accounting standards other than IFRS 15, includes property sales by our UK commercial property business, net fair value gains and losses in respect of investments in our National Grid Partners business, rental income, income arising in connection with the Transition Services Agreements in place following the sales of the UK Gas Transmission business and the ESO, and an adjustment to NGV revenue in respect of the interconnector cap and floor and Use of Revenue regimes constructed by Ofgem.
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