Semantic Coherence: British Gas – Signal Evidence & AI Readability

British Gas

(https://www.britishgas.co.uk) 📸 Data Snapshot: May 16, 2026
Semantic Coherence — The Lens

Pull the main entities out of the H1, then check whether they actually recur through the body. A page that announces one thing and then talks about another drifts. Headings with no real sentences underneath read as pseudo-substance.

Semantic Coherence Homepage promise vs. Sub-page reality.
19 Impact Weight: 20 / 100
95% Reputation

There is strong alignment between the H1 hero signal of taking control of energy bills and the actual sub-page content offering fixed-price tariffs for up to 2 years. The promise of being on a mission to create a greener future is directly supported by H3 sections for solar panels, heat pumps, and EV charging. Minor drift occurs where generic peace of mind language is used to describe simple financial locking of rates, but the overall service identity remains consistent.

Semantic Coherence is read from the heading hierarchy first: what each page announces in its H1 and headings, then whether the body actually delivers on it. Below is the structure the engine mapped, followed by the clean text to check for drift between promise and reality.

🏗️ Semantic Structure — heading hierarchy & page identity (the promise the page makes)
HOMEPAGE Gas and electricity, boilers and energy efficiency – British Gas (https://www.britishgas.co.uk)
Title

Gas and electricity, boilers and energy efficiency – British Gas

Meta

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.

H1 Take control of your energy bill – fix your prices now
H2 We're here to keep things warm and working
H2 Our Which? Trusted Traders
H2 Get an energy quote quicker than you can boil the kettle
H2 We've got great deals for EV drivers
H2 We’re on a mission to create a greener future too
H2 So join us and start your journey to net zero
H2 Additional information
H3 Sale Get your boiler serviced for just £69
H3 New NEW: super-cool air con has arrived
H3 We make managing properties easier for landlords
H3 Smart meters 
H3 Heat pumps
H3 Solar Panels and batteries
H3 Smart heating
H3 EV charging
H3 Home Health Check
H3 Home insulation
📝 The Narrative — clean text per page (homepage promise vs. sub-page reality)
HOMEPAGE (https://www.britishgas.co.uk) Gas and electricity, boilers and energy efficiency – British Gas
[H1]
Take control of your energy bill – fix your prices now
Fix now for peace of mind

Choose a fixed tariff today and lock in your prices for up to 2 years.

[H3]
Sale
Get your boiler serviced for just £69

Join British Gas Membership and get extra savings in our sale. An annual boiler service normally costs £109 for non-members, but you’ll save £40. Not joined yet? Sign up instantly for free. Offer ends 01/06. T&Cs apply.

Book now

[H3]
New
NEW: super-cool air con has arrived

Think we just keep you warm in the winter? Think again! We’re now offering the latest air con to help beat the summer heat too.

Get a free quote

[H2] We're here to keep things warm and working
With thousands of experts and engineers nationwide and helpful advisers available 7 days a week, we're always here to keep your home running.

Why choose us?

Trusted by 9 million customers to take care of things
You know you can count on us.

We're helping the UK hit zero carbon emissions by 2050
We’re not just doing our best for you, but our planet too.

We launched a £140m support fund to help customers
We’ll be there when you need us.

We've been around for over 200 years
Nobody knows the ins and outs of homes like we do.

[H2] Our Which? Trusted Traders
When you choose our engineers to get the job done, you can trust it'll be smooth and safe from start to finish. Not to mention that our boiler installations have passed the rigorous Which? assessment process with flying colours.
Get a free quote online or book in a visit from one of our local engineers. Whatever your home and budget, they'll find the right boiler for you.
Get your new boiler

[H2] Get an energy quote quicker than you can boil the kettle
We won Best Overall Improvement in the Uswitch Energy Awards 2025, and more than 155,000 customers rate us 5 stars on Trustpilot.
What we’re trying to say is if you switch to us, you’ll be in good hands. And we’d love to have you join the millions of people who trust us for their energy.

Switch to British Gas

[H2] We've got great deals for EV drivers
Charge your car overnight for much less by pairing our EV Tariff with Hive Power+. You could drive 9,000 miles for just £185.*
Pair Power+ with any British Gas electricity tariff and you save 25% on all your EV home charging. Combine this with our EV tariff and you could pay the equivalent of just 6.75p/kWh for all your home charging. Think of how soundly you’ll sleep counting your savings instead of sheep.1
* Off-peak Power+ charging on BG EV Power tariff with 3.3 miles per kWh efficiency.

Get an EV tariff quote

[H3] We make managing properties easier for landlords
We help landlords stay compliant and protected with Gas Safety Certificates, EICRs, boiler cover and more.

Find out more

[H2] We’re on a mission to create a greener future too
Around 40% of the UK's carbon emissions come from our homes - and we want to change that for good. Whatever your budget, we've got lots of ways to cut your home's carbon footprint. From simple swaps to the latest future-ready tech.
Go greener with us

[H2] So join us and start your journey to net zero

[H3]

Smart meters

Book now

[H3]

Heat pumps

Shop heat pumps

[H3]

Solar Panels and batteries

Shop solar panels

[H3]

Smart heating

Shop Hive smart heating

[H3]

EV charging

Shop EV chargers

[H3]

Home Health Check

Book Home Health Check

[H3]

Home insulation

Shop insulation

[H2] Additional information

Save 25% on the electricity used to charge your Hive-connected EV charger, applied as a credit to your electricity account. Power+ is only available to customers with a compatible EV charger, a British Gas electricity tariff, and a smart meter in credit mode; savings are based on the British Gas EV Power May27 tariff (correct as of 01/04/2026), assume 3.3 miles/kWh efficiency, and require all charging to occur in Power+ mode during off-peak hours managed by Hive.
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