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Energy, telecoms & utilitieswww.nationalgrid.com

National Grid — website check

British multinational electricity and gas utility company, founded 1990, based in London. National Grid’s website (www.nationalgrid.com) runs on Drupal. It is delivered through Cloudflare. Email from the domain is protected by an enforced DMARC policy.

Logo: Unknown author · Public domain · Wikimedia Commons
61
Brand Web Indexout of 100

Share of 26 technical checks the site passes: security, speed, email and SEO. A measurement of the website — not a popularity ranking.

78
Security
20
Speed & delivery
75
Email & domain
55
SEO & markup
Official siteChecked 23 Oct 2026

About the brand

Founded1990
CountryUnited Kingdom
HeadquartersLondon
IndustryElectric power industry
Official websitewww.nationalgrid.com

Facts: Wikidata (CC0).

Built with

CMSDrupal
Tag managersGoogle Tag Manager
CDNCloudflare
Web serversVarnish
Hosting platformsAcquia
Security & bot protectionCloudflare Bot Management

Hosting & delivery

Servercloudflare
Network (AS)Cloudflare
HTTP versionHTTP/3
TLSTLS 1.3
CertificateGoogle Trust Services · valid until 2026-11-28
First response14,579 ms
Homepage weight3,078 KB
IPv6no

Email & domain

Mail providerProofpoint
SPFyes
DMARC policyp=reject
BIMIyes
DNSSECno
CAAno
Verified servicesAnthropic, Atlassian Cloud, Canva, DocuSign, Meta Business (domain verification), Twilio

SEO & social

Title30 characters
Meta description188 characters
Canonicalyes
Structured datano
Language versions0
Open Graphyes

AI crawlers & robots

AI crawlers blockednone
llms.txtno
ads.txtno
security.txtno

Checklist

Security

  • HTTPS by default
  • HSTS header
  • TLS 1.3
  • Content-Security-Policy
  • X-Content-Type-Options
  • Referrer-Policy

Speed & delivery

  • HTTP/3
  • IPv6
  • First response under 1.5 s
  • Homepage under 1.5 MB

Email & domain

  • SPF record
  • DMARC record
  • DMARC enforced (quarantine / reject)
  • BIMI logo record
  • DNSSEC
  • CAA record

SEO & markup

  • Title tag 10–70 characters
  • Meta description
  • Canonical link
  • Exactly one H1
  • Structured data (JSON-LD)
  • Open Graph title and image
  • All images have alt text
  • XML sitemap
  • robots.txt
  • security.txt

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Data from our own crawler: homepage, DNS, TLS and robots.txt of each brand’s official website. coolbrands.uk.com is an independent catalogue. It is not affiliated with Superbrands (UK) Ltd or the CoolBrands® awards programme, and does not publish their results.

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