Question to the Department for Transport:

To ask Her Majesty’s Government, further to the Written Answer by Lord Ahmad of Wimbledon on 4 May (HL7877), why they have not specified as part of their sustainability policy for HS2 the use of sustainable aggregates in the design of structures.

The HS2 Sustainability Policy states that we will ‘source and make efficient use of sustainable materials.’ This includes the use of sustainable aggregates but is a purposely high-level statement intended to cover all types of sustainable materials. The detailed specifications for the sourcing and use of all materials, including aggregates, will be developed through the design process in line with the Sustainability Policy.