Exhibit 15.2
July 17, 2017
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Commissioners:
We have read the statements made by National Grid plc included under Item 16F of this Form 20-F/A, which we understand will be filed with the Securities and Exchange Commission on July 17, 2017. We agree with the statements concerning our Firm in this Form 20-F/A.
Very truly yours,
/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
London, United Kingdom
