Tonnes of carbon dioxide equivalent — one unit that combines all greenhouse gases, weighted by their warming effect, so everything can be added up and compared.
Tip: words with a dotted underline have a plain-language definition — hover or tap them to read it.
Our total footprint this year
In plain terms: everything we did in 2025 added about 1067 tonnes of greenhouse gases to the atmosphere, measured in a single comparable unit — tCO₂e.
Our footprint was lower than last year — down from 1087.4 to 1066.9 tCO₂e (-1.9%). This is a factual change in the data, shown so you can track the trend over time. It isn't a pass or fail.
What 1,066.9 tonnes looks like
Tonnes of gas are hard to picture, so here are two everyday comparisons for the same total. They're illustrative — a way to feel the scale, not extra measurements.
About the same as driving an average petrol car 4,104,494 miles — roughly 165 times around the Earth.
Based on the average petrol car. Scales automatically with the total.
It would take roughly 42,675 mature trees a full year to absorb this much CO₂e — about the size of a small woodland.
Based on annual tree sequestration. Scales automatically with the total.
Where our emissions come from
Emissions are grouped into three standard categories called . Here's the whole picture in one place, with a plain-language name for each.
What this means
The electricity we buy from the grid is generated somewhere — often by burning fuel. Those emissions happen off your site but are counted as yours because you chose to use the power.
What this means
These are emissions from everything around our direct operations — suppliers, purchased goods and services, business travel and more. They happen outside your walls but are a result of how the business runs. This is the single largest part of your footprint at 97% of the total.
See the categories
What this means
These are emissions from things we own or control directly — like gas boilers, company vehicles, or on-site fuel use.
The biggest contributors
Ranked from largest to smallest, so it's clear where our footprint mostly comes from — and where the biggest opportunities to reduce it sit.
Emissions relative to size
Our total on its own can rise simply because we grew. An divides emissions by a measure of size, so we can compare fairly year to year and against peers.
For every person who works here, our activities produced about 5.6 tonnes of CO₂e this year.
For every £1m of revenue, our activities produced about 14.8 tonnes of CO₂e this year.
How this report was measured
So these figures can be trusted, here's exactly what's included and how it was calculated. Every number traces back to the .
All operations under our control, for the period Jan–Dec 2025.
GHG Protocol Corporate Standard. Every figure is expressed in tCO₂e for consistency.
We prioritise measured, verifiable data throughout. Where this isn't yet available, we apply the best available methods to keep figures as accurate as possible.
Every term, defined
The same definitions that appear as pop-ups throughout the report, gathered in one place for reference.
The most widely used international standard for measuring and reporting greenhouse gas emissions. It sets the rules this report follows.
Emissions a company creates directly — for example burning gas on site or fuel in its own vehicles.
Emissions produced when generating the electricity, heat or steam a company buys and uses.
All other emissions across a company’s value chain — from suppliers and purchased goods to business travel and product use.
Emissions divided by a measure of business size (like employees or revenue), so a company can be compared fairly as it grows or shrinks.
Two ways to count electricity emissions. Location-based uses the average local grid; market-based reflects the specific electricity actually bought, including green tariffs.
Carbon neutral usually means emissions have been balanced by offsets. Net zero means cutting emissions as far as possible first, then offsetting only a small remainder — a higher, science-aligned bar.
Positive Planet helps organisations measure, understand and reduce their carbon footprint, turning emissions data into clear, GHG Protocol-aligned reporting and a practical path to net zero. This report was prepared in partnership with Positive Planet.
Learn more about usFull-scope footprints built to the GHG Protocol.
Clear, audit-ready reporting anyone can understand.
A practical roadmap to cut emissions year on year.