We are pleased to provide our Wholesale Letters Business Unit carbon values for the period 1 April 2024 to 31 March 2025.

Carbon Unit Values 2024/25 Wholesale Letters Business Unit

Carbon unit values for Royal Mail Wholesale have decreased compared to last year.

Our Scope 1 & 2 emissions are down 27%, and our Scope 3 emissions are down 24%, both compared against our base year in 2020-21. We have also deployed around 7000 electric vans and deployed 27 million litres of biofuel in our trucks. We are also pleased to report that our buildings run on 100% renewable electricity.

Our ESG Report for 2024/25 was published today and will be accompanied by an external assurance statement.

Royal Mail Calculation Method

Carbon per Letter and Large Letter for Wholesale within Royal Mail is calculated in four steps:

1. Calculating domestic mail emissions: These include all Scope 1-2 emissions and Scope 3 Upstream transportation and distribution (domestic). This is for all Royal Mail activities and subsidiaries including head offices.
2. Split emissions for parcels and letters: The greater majority of our network is blended and emissions are split on % revenue of our letters business versus our parcels businesses.
3. Divide letter emissions by letter volume: Total emissions attributed to letters are then divided by the reported letter volumes as stated in our annual report and account.
4. Split emissions for Wholesale: Total Wholesale emissions are then separated and divided by the reported Wholesale volumes.

These figures remain fixed for each financial year and are updated upon release of our Annual Report and Accounts and ESG Report. We seek to continually improve our data reporting practices and we will re-state prior figures to ensure direct comparison where material method changes occur.