Document

We consent to the incorporation by reference in Registration Statement No. 333-281812 on Form F-3 and Registration Statement Nos. 333-170716, 333-184558 and 333-293892 on Form S-8 of our reports dated 13 May 2026, relating to the consolidated financial statements of National Grid plc and the effectiveness of National Grid plc’s internal control over financial reporting appearing in this Annual Report on Form 20-F for the year ended 31 March 2026