A combination of reduced sailings, retrofits and a tie-up with competitor DFDS helped P&O Ferries cut its carbon footprint by 9% last year.

The UK ferry operator said it reduced last year’s carbon footprint by 85,000 tonnes and is hopeful of making further reductions in 2023.

P&O Ferries chief executive Peter Hebblethwaite said the lion’s share of last year’s reductions was attributable to a space charter agreement signed with DFDS 18 months ago.