Heathrow wants third-runway costs checked at set points over 20 years, outside the government scorecard
Heathrow's Helen Elsby told MPs that third-runway affordability should be checked at regular points over 20 years and left out of the government scorecard. Airlines and freight companies want more cost scrutiny before ministers choose a design, City AM reported.
The Board Room · Leadership desk
Three figures: Heathrow's scheme is expected to cost roughly 10bn pounds more than Arora's Heathrow West plan, per City AM. Arora told MPs his plan could be delivered five years quicker. Heathrow's Helen Elsby said the project spans 20 years.
| Figure | Value | Note | Claim |
|---|---|---|---|
| Heathrow scheme's extra cost over Heathrow West, roughly | 10 bn pounds | 11 | |
| Arora's plan could be delivered quicker by | 5 years | Arora's claim to MPs | 12 |
| Span of the project, per Heathrow's Elsby | 20 years | Elsby: check affordability at set points | 3 |
What happened
- The framework Heidi Alexander will use to pick a design covers climate, noise, nature and economic benefit, with no major benchmark on cost.
- Heathrow's scheme is expected to cost roughly 10bn pounds more than Surinder Arora's Heathrow West plan, which most major airlines support.
- Arora told MPs his plan would build a shorter runway first, extend it to 3,500m if ministers wish, and arrive five years sooner than Heathrow's.
Why it matters
- decision The Transport department has to decide whether to add a cost test before it selects a scheme, with Heathrow arguing against and airlines lobbying for one.
- cost Airlines and passengers pay for the development through charges added to fares, so cost growth after a design is chosen reaches them.
- constraint A check after selection can hold the chosen design to a budget, but it cannot weigh that design against a cheaper rival that ministers have already passed over.
Heathrow's argument is about the order of events. Elsby said at the Transport Committee hearing: "We must remember that this is a project that spans 20 years... and therefore we believe affordability should be checked at regular touch-points" [3]. On her account the cost checks come after ministers have chosen, because she also said affordability should not form part of the current planning process [2].
She gave a second reason, and it is institutional. "Therefore to look at an affordability test within a policy that drives a planning statement - we are concerned that would... compromise the role of the CAA [Civil Aviation Authority]," she said [4]. City AM's account of the hearing does not say how a test would compromise the regulator, what the touch-points would be, or who would run them.
Airlines see the sequence as the problem. City AM reported industry concern that costs could spiral after ministers rubber stamp a design [5]. Heathrow's answer is that later checks exist. The trade-off is then plain. A cost test in the scorecard buys scrutiny at the one moment when more than one scheme is still open, and it costs what Elsby says it costs, a tangle between planning policy and the CAA's role. Leaving the test out keeps those two apart and moves cost scrutiny to a stage when one scheme is left. We think payers get the weaker end of that exchange.
The scorecard's gap matters more because of what the schemes involve. City AM described Heathrow's plan as more expensive and more complicated than Arora's, with a longer runway, a rerouted M25 and several relocated lakes [10]. The benefit side of the ledger has a criterion in the framework, economic benefit [7]. The cost side has no major benchmark [7].
Heathrow boss Thomas Woldbye defended expansion separately, saying no other aviation project could provide the same "huge investment" given Heathrow's unique hub status [13]. The Prime Minister has so far refused to endorse the project, saying it is a matter for "London and Londoners" [14].
What to watch
- Whether the Transport department adds a cost or affordability criterion to the selection framework before Alexander picks a preferred proposal.
- Whether Heathrow or the department defines the touch-points: who runs them, when they fall, and what a failed check triggers.
- Whether the Prime Minister moves from 'London and Londoners' to an endorsement of expansion.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence50
- Adoption
- Insufficient
- Hype gap
- Insufficient
- Incentives70
- Confidence55
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
Helen Elsby, chief solutions officer at Heathrow Airport Limited, told MPs that affordability should not be included in the scorecard the government sets third runway developers.
- [2]
Elsby said Heathrow's frontrunner project was 'absolutely aligned with the criticality of affordability' but that affordability should not form part of the current planning process.
- [3]
Elsby said at a Transport Committee hearing: 'We must remember that this is a project that spans 20 years... and therefore we believe affordability should be checked at regular touch-points.'
- [4]
Elsby said: 'Therefore to look at an affordability test within a policy that drives a planning statement - we are concerned that would... compromise the role of the CAA [Civil Aviation Authority].'
- [5]
Industry concerns, which Heathrow's remarks rejected, are that costs could spiral after ministers rubber stamp a design.
- [6]
City AM said the remarks are likely to rattle cost-sensitive airlines and freight companies, who have called for greater scrutiny of the privately financed project's affordability before transport secretary Heidi Alexander selects a preferred proposal.
- [7]
The framework against which Alexander will decide includes criteria on climate, noise pollution, nature and economic benefit, but there is no major benchmark on cost.
- [8]
Airlines have been lobbying the Transport department to weigh up costs in its decision-making over Heathrow, to prevent a design that is unnecessarily expensive being approved.
- [9]
The hub's customers, including airlines and passengers, will have to foot the bill for the development process via charges added on to travellers' fares.
- [10]
Heathrow's scheme is seen as more expensive and more complicated than rival plans proposed by Surinder Arora; it involves a longer runway, rerouting the M25 and relocating several lakes around the site.
- [11]
Heathrow's scheme is expected to cost roughly 10bn pounds more than Arora's competing Heathrow West plan, which has the support of most major airlines.
- [12]
Arora told MPs his plan would deliver a shorter runway initially, expanding to a full 3,500m strip if ministers wished, and said it could be delivered five years quicker than the Heathrow Airport Limited scheme.
- [13]
Heathrow boss Thomas Woldbye defended expansion, saying no other aviation development could provide the same 'huge investment' into the UK given Heathrow's unique hub status.
- [14]
The Prime Minister has so far refused to endorse the project, saying it is a matter for 'London and Londoners'.
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Sources
1 independent publisher whose own reporting we read for this story.
- cityam.comHeathrow rejects calls to put affordability at heart of third runway debate
1 article · October 14, 2026
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