Heathrow Airport Expansion

Debate between Simon Lightwood and John McDonnell

Tuesday 20th October 2026 Westminster Hall

[Simon Lightwood]

I am still going to make a bit of progress; I have limited time, and I want to reply to the points raised.

Hon. Members will be aware that the Government published the draft HENPS consultation in June. That set out the proposed planning policy framework for expansion and the requirements that any future scheme would need to meet, including the Government’s four tests on economic growth, climate change, air quality and noise.

As I have noted, we are carefully considering the more than 27,000 responses received and will also consider the recommendations of the Transport Committee. Any finalised HENPS would also be subject to parliamentary consideration, including a debate and a vote in the House, before it could have legal effect.

The draft HENPS does not grant development consent for expansion. Only when a national policy statement has been designated can proposals for a development consent order be brought forward. Any future proposal by a promoter of expansion would still need to progress through the statutory development consent order process and demonstrate that it met the requirements of the relevant policy framework. It is for potential promoters to determine the timetable and sequencing of their proposals, and for the Government to put the right frameworks in place. Any potential promoter bringing forward a scheme of this scale and complexity will need to balance pace with deliverability, affordability and value for money for passengers.

Given the current stage of the consultation process and the ongoing period of parliamentary scrutiny, I will not seek to pre-empt those processes, and my remarks today should be considered in that context. The Government will provide a more substantive update to the House once we are in a position to do so. That said, I will address some of the points raised during today’s debate where I can.

[John McDonnell]

I understand the difficulty that the Minister is in, and I have a lot of sympathy for him; I would not want to be associated with this thing either. There is one issue that I would like him to write to us on. The air quality working group will report in three months’ time, which could possibly be after a decision is made by the Government. One of the things that we will be asking for, if any framework is developed, is for the Government to set a limit that we should aim for on ultrafine particles. In Europe, they do that, and it is increasingly becoming a legal requirement to monitor them there. We have no monitoring and no limit. If he could write to me about the Government’s consideration of that, it would be really helpful.

[Simon Lightwood]

I thank my right hon. Friend for his intervention. I will come on to ultrafine particles in a bit. First, turning to the four tests—economic growth being the first—expansion could generate economic growth across the country, with updated analysis indicating potential cumulative benefits of between £39 billion and £52 billion to UK passengers and the wider economy, including lower fares, increased flight frequencies and fewer delays.