Question to the Department for Transport:

To ask the Secretary of State for Transport, what the estimated cost to the public purse is of UK transport-sector decarbonisation policies relating to (a) the Zero Emission Vehicle Mandate for cars and vans, (b) HGV decarbonisation programmes, (c) bus and coach decarbonisation schemes and (d) sustainable aviation fuel and wider aviation decarbonisation initiatives by mode.

The transition to zero emission vehicles, including cars, vans and HGVs, received £1.8bn in the spending review settlement, which is additional to the £320m allocated at Autumn Budget 2024.

£40m was allocated for zero emission bus projects through the Zero Emission Bus Regional Areas (ZEBRA) Scheme at Autumn Budget 2024.

£63m in 2025/2026 will support Sustainable Aviation Fuel (SAF) production in the UK through the Advanced Fuels Fund. Further support is committed through the next SR period to 2029/30 – the parameters of this funding will be published in due course.

The SAF Revenue Certainty Mechanism will be industry funded.

The Government has announced up to £2.3bn of funding over ten years to extend the Aerospace Technology Institute Programme to 2035. The programme supports industry led projects including the development of new low and zero carbon aircraft.