Arts, culture & eventslondoncoliseum.org

London Coliseum — website check

Theatre in London, home to the English National Opera, founded 1904. London Coliseum’s website (londoncoliseum.org) runs on WordPress. It is delivered through Cloudflare. Email from the domain is protected by an enforced DMARC policy.

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.

100

Security

Speed & delivery

Email & domain

SEO & markup

Official siteChecked 23 Oct 2026

About the brand

Founded1904

CountryUnited Kingdom

Official websitelondoncoliseum.org

Facts: Wikidata (CC0).

Built with

CMSWordPress Yoast SEO

Cookie consent (CMP)Cookiebot (Usercentrics)

Tag managersGoogle Tag Manager

CDNCloudflare

JavaScript librariescore-js jQuery jQuery Migrate lazysizes

CAPTCHAGoogle reCAPTCHA

VideoYouTube embed

Programming languagesPHP

Hosting & delivery

Servercloudflare

Network (AS)Cloudflare

HTTP versionHTTP/3

TLSTLS 1.3

CertificateGoogle Trust Services · valid until 2026-12-28

First response3,192 ms

Homepage weight276 KB

IPv6yes

Email & domain

Mail providerMicrosoft 365

SPFyes

DMARC policyp=quarantine

BIMIno

DNSSECno

CAAno

Verified servicesAnthropic, Brevo, Meta Business (domain verification), Google Search Console, loader.io, Microsoft 365

SEO & social

Title22 characters

Meta description150 characters

Canonicalyes

Structured dataBreadcrumbList, ImageObject, ListItem, ReadAction, SearchAction, WebPage

Language versions0

Open Graphyes

Social profiles linkedInstagram, X

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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