Question to the HM Treasury:

To ask the Chancellor of the Exchequer, pursuant to the Answer of 3 February 2026 to Question 109207, whether she plans to publish a breakdown of UK Emissions Trading Scheme receipts derived from maritime emissions alongside Government expenditure supporting maritime decarbonisation.

Receipts from the UK ETS derive from the sale of UK ETS allowances at fortnightly auctions at the prevailing market price. The OBR have estimated 2024-25 receipts to be £3.4bn. ETS operators can buy and sell allowances – including free allocation - on the secondary market at any time. As such it is not possible to break down ETS receipts by sector.