Pomerantz LLP Investigates National Grid Securities Fraud Claims.

Pomerantz LLP is investigating claims on behalf of National Grid investors for potential securities fraud. The investigation concerns a fire that caused Heathrow Airport to shut down in March 2025, which was reportedly caused by a known fault at a National Grid substation. The company had been aware of the issue since 2018 but failed to fix it. Investors are advised to contact Danielle Peyton at newaction@pomlaw.com or 646-581-9980, ext. 7980.

Investors in National Grid plc (NYSE: NGG) are being urged to contact legal counsel as two prominent law firms have initiated investigations into potential securities fraud. The investigations stem from allegations that National Grid may have issued materially misleading business information to the investing public, specifically in relation to a fire that disrupted operations at London's Heathrow Airport in March 2025.

The fire, which stranded thousands of travelers, was caused by the failure of the UK power grid to maintain an electricity substation, according to an official report. The incident has prompted the energy regulator to initiate an investigation. The UK Energy Minister, Ed Miliband, expressed deep concern, noting that the issue had been identified seven years ago but was not addressed by National Grid.

Following the publication of the report, National Grid American Depositary Shares (ADSs) saw a 5% decline in value on July 2, 2024. This has led to two major law firms, The Portnoy Law Firm and The Rosen Law Firm, to announce investigations into potential securities claims on behalf of National Grid shareholders.

The Portnoy Law Firm advises investors to contact attorney Lesley F. Portnoy, Esq. at 310-692-8883 or email info@portnoylaw.com to discuss their legal rights and options for recovering losses. The Rosen Law Firm encourages investors to contact Phillip Kim, Esq. toll-free at 866-767-3653 or email case@rosenlegal.com for information on the class action. Both firms are offering complimentary case evaluations and contingency fee arrangements, meaning investors will not pay any out-of-pocket fees or costs.

Additionally, Pomerantz LLP is also investigating claims on behalf of National Grid investors. Investors are advised to contact Danielle Peyton at newaction@pomlaw.com or 646-581-9980, ext. 7980, to discuss their legal rights.

Investors are urged to act promptly, as these investigations are ongoing and the opportunity to join the class action may have a limited timeframe. It is essential for investors to review their investment records and contact the respective law firms to determine if they are eligible to participate in the class action.

References:
[1] https://www.globenewswire.com/news-release/2025/07/30/3124468/0/en/National-Grid-PLC-Investors-Company-Investigated-by-the-Portnoy-Law-Firm.html
[2] https://www.morningstar.com/news/pr-newswire/20250731dc42147/rosen-law-firm-encourages-national-grid-plc-investors-to-inquire-about-securities-class-action-investigation--ngg
[3] https://www.globenewswire.com/news-release/2025/08/04/3126968/673/en/NGG-Investor-News-If-You-Have-Suffered-Losses-in-National-Grid-plc-NYSE-NGG-You-Are-Encouraged-to-Contact-The-Rosen-Law-Firm-About-Your-Rights.html
[4] https://www.morningstar.com/news/globe-newswire/9504150/national-grid-alert-bragar-eagel-squire-pc-launches-investigation-into-national-grid-plc-on-behalf-of-national-grid-stockholders-and-encourages-investors-to-contact-the-firm