Pomerantz LLP Investigates National Grid Securities Fraud Claims.

Pomerantz LLP is investigating claims of securities fraud and unlawful business practices against National Grid plc. The investigation concerns a fire at an electrical substation owned by National Grid, which caused Heathrow Airport to shut down. The fire was caused by a known fault that had been present since 2018 but was not fixed by the company. Investors who have been affected are advised to contact Danielle Peyton at [email protected] or 646-581-9980, ext. 7980.

Pomerantz LLP, a prominent law firm specializing in corporate, securities, and antitrust class litigation, has initiated an investigation into potential securities fraud and unlawful business practices by National Grid plc (NYSE: NGG). The investigation centers on a fire that occurred at an electrical substation owned by National Grid, which led to the shutdown of Heathrow Airport. The fire, which took place on March 20, 2025, was caused by a known fault that had been present since 2018 but was not addressed by the company.

The investigation, announced on August 16, 2025, is being led by Danielle Peyton at Pomerantz LLP. Investors affected by this incident are advised to contact her at newaction@pomlaw.com or 646-581-9980, ext. 7980 [3].

The fire at Heathrow Airport caused significant disruption, stranding thousands of passengers. The United Kingdom's energy system operator, National Energy System Operator (NESO), published a report on July 1, 2025, which detailed the findings of its investigation into the incident. The report stated that the fire was caused by a known fault at an electrical substation owned by National Grid, which had been aware of the problem since 2018 but failed to fix it [3].

On July 2, 2025, following the publication of the NESO report, National Grid's American Depositary Receipt (ADR) price fell by $3.77 per ADR, or 5.07%, to close at $70.61 per ADR [3].

Pomerantz LLP, founded by the late Abraham L. Pomerantz, has a history of recovering multimillion-dollar damages awards on behalf of class members. The firm is known for its expertise in securities class actions and has recovered hundreds of millions of dollars for investors over the years [3].

Investors who have been affected by this incident are encouraged to review the details of the investigation and consider their legal options. The investigation is ongoing, and further developments are expected in the coming weeks.

References:
[1] https://www.prnewswire.com/news-releases/rosen-law-firm-encourages-national-grid-plc-investors-to-inquire-about-securities-class-action-investigation--ngg-302528030.html
[2] https://www.morningstar.com/news/pr-newswire/20250812dc49928/rosen-law-firm-encourages-national-grid-plc-investors-to-inquire-about-securities-class-action-investigation-ngg
[3] https://www.prnewswire.com/news-releases/investor-alert-pomerantz-law-firm-investigates-claims-on-behalf-of-investors-of-national-grid-plc---ngg-302527419.html