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Written question asked by Sarah Olney (Liberal Democrat) on Friday, 28 August 2026, in the House of Commons. It was due for an answer on Friday, 4 September 2026 (named day). It was answered by Justin Madders (Labour) on Friday, 4 September 2026 on behalf of the Department for Transport.


Heathrow Airport: Roads

Question

To ask the Secretary of State for Transport, what estimate she has made of the cost of relocating or rebuilding the M25 and other affected roads as part of any Heathrow expansion project.

Answer

The Government has been clear that if Heathrow expansion proceeds it will be privately financed. Any works required to the strategic or local road networks, including the M25, would form part of the promoter’s cost estimates for its scheme. The costs of such works will depend on the final scheme design brought forward by the promoter and would be subject to scrutiny through the development consent process.


Secondary information

Type
Written question
Reference
21295
Session
2026-27
Subjects
Costs Construction Heathrow Airport Roads M25
Contains statistics
Yes
Link
View this Written question on www.parliament.uk