questionText: To ask the Secretary of State for Transport, with reference to the National Audit Office's report entitled Innovation in transport, published on 18 May 2026, what the expenditure has been by her Department and HS2 Ltd on the calcined clay acceleration plan since December 2023; and what her planned timeline is for establishing the proposed test kiln and a commercial kiln site.
answerText: Since December 2023, HS2 Ltd has spent £377,225 (net) on work to accelerate the UK adoption of calcined clay, with the aim of understanding and mitigating the blockers to the UK establishing a commercial kiln to produce calcined clay. This would enable wi...
heading: Transport: Concrete