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britishgas.co.uk

https://britishgas.co.uk· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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britishgas.co.uk
Desktop screenshot of britishgas.co.uk
Mobile screenshot of britishgas.co.uk
Mobile

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Hosting Provider

IP Address

159.60.150.174

Site Location

🇬🇧 Windsor,, United Kingdomvia schema_nap

Server Location

🇫🇷 Suresnes, France

ASN

AS35280

Organization

F5 Distributed cloud services

Server

volt-adc

CDN

CloudFront

Nameservers

dns2.comlaude-dns.net.dns3.comlaude-dns.co.uk.dns4.comlaude-dns.eu.dns1.comlaude-dns.com.

Performance

77

Core Web Vitals

Weight

First Contentful Paint
2.7 s10%
Speed Index
3.5 s10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.2 MB
61 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
Adobe Experience Manager
Infrastructure
Platform
AWS CloudFront
CDN
CloudFront

Technology Stack

10 Technologies Detected

SEO Analysis

B70/100
20
6
0
Meta Tags14/15
Content8/12
Headings8/8
Technical22/25
E-E-A-T2/7
Images0/7
Links1/5
URL5/5
Social4/5
Freshness0/4
Mobile3/4
Indexability3/3
B
britishgas.co.ukbritishgas.co.uk

Gas and electricity, boilers and energy efficiency - British Gas

British Gas is the largest UK energy and home services company. We supply gas and electricity, boilers and boiler cover as well as other home services.

Title Length64 chars

Recommended: 50-60 chars (~380px / 580px)

Description Length151 chars

Recommended: 120-160 chars

Issues (0)

    Crawlability

    Sitemap

    Type: standard

    187 URLs

    robots.txt

    78 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    23/100
    Needs Work
    6 14

    Sponsored

    AI & LLM Readiness

    D42/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    3/25
    Citation
    12/25

    AI Bot Access

    14/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:2%
    Words:636
    Token eff.:Optimal

    Structured Data

    1 JSON-LD
    Organization×1.1
    sameAs entity links

    Citation Readiness

    Opening Summary15w
    Descriptive Headingsavg 5.1w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    AI readiness recommendation preview...

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    B
    78/100
    12
    Passed
    1
    Critical
    1
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    16/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    10/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    11/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    6/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 recommendations
    • Accessibility recommendation preview...

    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    35/100
    C
    147 mg
    CO₂e / view
    1.2 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    169 mg
    vs
    Returning (cached)
    84 mg
    Annual (10K/mo)
    17.7 kg
    Emission Segments
    Data Center
    33 mg
    Network
    35 mg
    Device
    79 mg
    Resource Breakdown
    JavaScript
    779.9 KB
    Images
    344.3 KB
    CSS
    46.5 KB
    HTML
    16.4 KB
    Other
    4.9 KB
    Green Hosting Not Verified
    F5 Distributed cloud services
    6 recommendations
    • Carbon footprint recommendation preview...
    D

    Security Score

    56%Poor
    Interactive

    HTTPS

    No WAF

    181d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    26.09.2025

    Valid Until

    26.10.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (5)

    britishgas.co.ukwww.britishgas.co.ukorigin.britishgas.co.ukwww.scottishgas.co.ukscottishgas.co.uk

    SHA-256 Fingerprint

    A9:6D:83:1B:A3:53:9D:21:26:91:1F:95:A7:C1:86:D0:EF:E4:A7:5C...

    Top Recommendations

    Security recommendation preview

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    age
    199385
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html;charset=utf-8
    date
    Mon, 27 Apr 2026 06:33:51 GMT
    server
    volt-adc
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (1)

    britishgas-co-uk.mail.protection.outlook.com

    Domain Information

    britishgas.co.uk

    DNSSEC
    Not Enabled

    Privacy & Compliance

    OneTrust

    Cookie Consent Banner
    OneTrust
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: OneTrust

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    B
    74/100
    Mobile Friendly156 breakpoints
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width, initial-scale=1
    2 recommendations
    • Mobile compatibility recommendation preview...

    Typography & Readability

    British Gas Subhead + British Gas Body

    WCAG Partial
    65/100
    Readability
    /30
    21/30

    14px · LH 1.50

    Hierarchy
    /20
    16/20

    4.84x ratio · ✓ H1→H6

    WCAG
    /25
    12/25

    1:1 min contrast

    Performance
    /25
    16/25

    3 fonts · 3 req

    Heading Font

    British Gas Subhead

    Sans69px

    Body Font

    British Gas Body

    Sans14px

    Contrast Ratio

    1:1

    5 issues

    Reading Comfort

    ~35 CPL

    Narrow lines
    69px
    h1
    40px
    h2
    28px
    h3
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

    ✅ Easy to read: Flesch score 71/100 — accessible to general audiences.

    ⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 4.8x larger than body text.

    Color Palette

    8 unique colors
    Light
    #ffffff
    Background· 26.400000000000002%
    #2282e6
    Accent· 32.800000000000004%
    #005eb8
    Primary· 0%
    #00308a
    Accent· 14.3%
    #4aaff8
    Accent· 9.7%
    #389ef2
    Accent· 7.6%
    #9ebbcc
    Secondary· 4.8%
    #216ac0
    Accent· 3.6%

    Business & Marketing Stack

    4 Tools Detected

    Enterprise

    Behavior Analytics

    1

    User behavior and product analytics

    Advertising

    1

    Ad platforms and retargeting pixels

    Privacy & Cookies

    1

    Cookie consent and privacy compliance tools

    Reviews & Social Proof

    1

    Customer reviews and testimonials

    4

    Categories

    4

    Total Tools

    1

    Enterprise

    2

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    21 Resources

    20
    Scripts
    1
    Styles
    11
    Async
    4
    Defer

    Top Script Sources

    googletagmanager.com(6)local(5)assets.adobedtm.com(4)britishgas.co.uk(2)assets.webchat.connect.centrica.com(1)

    Website Identity

    British Gas

    British Gas

    Organization

    British Gas is the largest UK energy and home services company. We supply gas and electricity, boilers and boiler cover as well as other home services.

    Maidenhead Road, Windsor,

    SL4 5GD, Windsor,, Berkshire

    UK

    Location detected: 🇬🇧 United Kingdom, Windsor,via schema_nap
    📧 Microsoft 365en-GB

    Sponsored

    Last analyzed: 28 Apr 2026 at 01:23

    Historical Analysis & Change Tracking