Direct emissions
348
tCO2e
A
ATT
Explore carbon emissions data for ATT. Mycelium helps you review reported emissions, disclosure status, Scope 1, Scope 2 and Scope 3 data, climate targets and sustainability information in one company profile.
This profile brings together available carbon emissions data for ATT, including reported figures, modelled estimates, disclosure documents and sustainability indicators, so you can review its emissions and compare its performance against similar companies. Read how we source and check this data.
Emissions
Carbon emissions
Total yearly emissions across all scopes
15,971 tCO2e
Scope 1
tCO2e
348
Scope 2
tCO2e
324
Scope 3 total
tCO2e
15,299
Scope 3 reported
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
Provenance
Emissions
Factors
122,855
kgCO2e / £M
Supplier specific emission factors (kgCO2e / £M)
Modelled
Reported
Scope 1 + 2
Direct + purchased energy
5,170
5,170
Upstream
+ upstream Scope 3
47,797
47,755
Total
+ all Scope 3
122,855
52,925
Which figure should I use?
Use Modelled. It is the most complete view: any categories the company hasn't disclosed are filled with industry-typical estimates, so a transparent company isn't unfairly penalised against one that simply hasn't reported.
Reported counts only emissions the company has filed itself. A blank or low Reported cell doesn't mean those emissions don't exist, just that the company hasn't disclosed them.
When Reported sits close to Modelled, that is a positive signal. The company has disclosed most of its salient emissions and there's little gap for the model to fill. Even then, Modelled is the right figure to use for a like-for-like comparison across companies.
Sustainability
Snapshot
Based on reported data, retrieved with AI
- ATT reported 15,971 tCO₂e in 2025.
- Scope 3 accounted for 96% of emissions.
- Reported across 2 of 15 GHG Protocol Scope 3 categories.
According to available emissions disclosures, ATT reported total yearly emissions of 15,971 tCO₂e in 2025. Scope 3 emissions accounted for 96% of reported output, indicating supply chain activity, purchased goods and services, business travel, and wider operational dependencies were the most significant contributors to the company's carbon footprint.
The company achieved a Mycelium Score of 0.0, placing it well below average for its sector for sustainability performance, and received a transparency score of 0.1, pointing to very little public detail on their key emissions.
Total Emissions across all scopes
15,971 tCO2e
Scope 1 emissions
Direct emissions from sources the company owns or controls, such as fuel use, facilities and vehicles.
Scope 2 emissions
Indirect emissions from purchased energy, including electricity, heating and cooling.
Location based
324
tCO2eMarket based
–
tCO2eScope 3 emissions
Wider value chain emissions across the 15 GHG Protocol categories, from purchased goods and business travel to investments, where reported.
Cat 1
Purchased goods & services
1
tCO2eCat 2
Capital goods
1
tCO2eCat 3
Fuel & energy related activities
1
tCO2eCat 4
Upstream transportation & distribution
1
tCO2eCat 5
Waste generated in operations
0
tCO2eCat 6
Business travel
5,536
tCO2eCat 7
Employee commuting
1
tCO2eCat 8
Upstream leased assets
1
tCO2eCat 9
Downstream transportation & distribution
0
tCO2eCat 10
Processing of sold products
0
tCO2eCat 11
Use of sold products
0
tCO2eCat 12
End-of-life treatment of sold products
0
tCO2eCat 13
Downstream leased assets
0
tCO2eCat 14
Franchises
0
tCO2eCat 15
Investments
9,085
tCO2e13 values were derived via Mycelium's normalisation process rather than reported by the company. Cells marked “–” were not disclosed.
Contact Info
Website
www.caa.co.ukAddress
C/O CIVIL AVIATION AUTHORITY
AVIATION HOUSE, BEEHIVE RINGROAD
CRAWLEY
RH6 0YR
Country
United Kingdom
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How scoring works
How the Mycelium Score is calculated
The Mycelium Score is out of 10. Up to 6.5 points reflect carbon intensity vs sector peers (emissions normalised against revenue). The remaining 3.5 reflect data quality: third-party verified, profile claimed by the company, and full disclosure across all reporting categories.
A higher score means lower carbon intensity than sector peers, backed by data that's third-party verified, claimed by the company, and fully disclosed. ATT's score sits at the top of this page and in the score panel.
How the Transparency Score is calculated
The Transparency Score measures how much of a company's key emissions data is publicly disclosed, graded from A (very high) down to F (very low). Crucially, it weights each gap by how material that bucket is for the company's industry, so an undisclosed category where the bulk of emissions sit hurts far more than a minor one.
For ATT, the single biggest gap is Investments (Scope 3 Category 15). Mycelium estimates it accounts for around 59% of the company's total footprint, typically the largest source of emissions for a Financial Services company, yet it hasn't been disclosed. Leaving a bucket this large unreported is what's holding the transparency score down.
In total, roughly 59% of ATT's estimated emissions sit in categories it hasn't reported. Disclosing these would be the fastest way to raise the transparency score.
Read the full scoring methodology
Our white paper covers exactly how the Mycelium Score and Transparency Score are calculated, including the normalisation process and what earns a 10/10.
Download the white paper (PDF)
ATT carbon emissions FAQs
What are ATT's carbon emissions?
In its 2025 reporting year, ATT disclosed total emissions of 15,971 tCO2e across all scopes. Scope 3 accounted for the largest share, around 96% of the total.
Does ATT report Scope 1, Scope 2 and Scope 3 emissions?
For 2025, ATT's available disclosure covers Scope 1 (348 tCO2e), Scope 2 (324 tCO2e), Scope 3 across 2 of the 15 GHG Protocol categories. Figures not reported by the company are shown as modelled estimates and labelled as such.
How transparent is ATT's emissions reporting?
ATT has a Mycelium transparency score of 0.1 out of 100. The score weights each emissions category by how material it is for the company's industry, so it reflects whether the disclosures that matter most have been made.
Is ATT sustainable?
Mycelium measures sustainability through carbon emissions data rather than giving a yes or no verdict. ATT has a Mycelium Score of 0 out of 10, which reflects its emissions intensity against sector peers together with how transparent and well-verified its reporting is. The emissions figures, disclosure documents and climate targets on this page give the fuller picture.
Is ATT environmentally friendly?
Carbon emissions are one measurable part of environmental impact, and the part Mycelium tracks. ATT disclosed 15,971 tCO2e for 2025, and its Mycelium Score of 0 out of 10 shows how that performance compares with similar companies in its sector.
Learn more about our methodology and where this data comes from.
