Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government what estimate they have made of the additional cost to ferry travellers between Great Britain and Northern Ireland as a result of the Greenhouse Gas Emissions Trading Scheme (Amendment) (Extension to Maritime Activities) Order 2026.

The Impact Assessment does not identify significant consumer price impacts and finds that compliance costs for domestic maritime operators are modest relative to their overall operating costs, with fuel and carbon costs forming only one part of total running costs. These findings are consistent with international evidence showing changes to ferry ticket prices in the low single digit range under equivalent carbon pricing.

The Government will review the maritime element of the United Kingdom Emissions Trading Scheme in 2028 to ensure that its impacts remain accurate, proportionate and fully assessed as the sector continues to decarbonise.