6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

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FORM 6-K

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REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

Date: 30 November 2023

Commission File Number: 001-14958

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NATIONAL GRID plc

(Translation of registrant’s name into English)

England and Wales

(Jurisdiction of Incorporation)

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1-3 Strand, London, WC2N 5EH, United Kingdom

(Address of principal executive office)

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Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

☒  Form 20-F      ☐  Form 40-F

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3- 2(b) under the Securities Exchange Act of 1934.  ☐  Yes    ☒  No

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): n/a

EXHIBIT INDEX

Exhibit 99.1

30 November 2023

National Grid plc ('National Grid' or the 'Company')

Scrip Dividend for 2023/24 Interim Dividend

National Grid today announces the scrip dividend reference price for the 2023/24 interim dividend. A timetable is provided below.

For ordinary shareholders, the scrip dividend reference price for the 2023/24 interim dividend is 1,015.60 pence. This is calculated as the average closing mid-market price of an ordinary share for the five dealing days commencing with, and including, the ordinary share ex-dividend date.

For American Depositary Receipt ('ADR') holders, the scrip ADR reference price for the 2023/24 interim dividend is US$64.1402. This is calculated by multiplying the scrip dividend reference price above by five (as there are five ordinary shares underlying each ADR) and by the average US$ rate for the equivalent dates.

The current terms and conditions of the scrip dividend scheme are available in the Investors section on the Company's website and from Equiniti (0800 169 7775).

2023/24 interim dividend timetable:

*The figure shown is gross of a $0.01 per ADR interim dividend fee which will be applied to cash distributions made to ADR holders in relation to the 2023/24 interim dividend. This fee does not apply to ADRs received through the scrip dividend.

Pritti Patel

Deputy Company Secretary & General Counsel, Corporate

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: 30 November 2023