LeadershipNot yet confirmed elsewhere1 publisher2 min readPublished Updated
Number 10 privately reassures Heathrow backers as Burnham declines to endorse the third runway
Number 10 has privately assured aviation executives it still backs Heathrow's third runway, three industry figures told City AM. For firms with money riding on the runway, the vote on its policy framework is still the firmer signal.
The Board Room · Leadership desk
Executives: privately reassured by Downing Street, City AM understands. Burnham: refused to back the runway. Starmer: four-square support. Bidders: policy statement vote expected early next year. Heathrow: 2039, not 2035. Alexander: if the statement passes, decides which bid, if any, to approve.
- exposure Aviation executives City AM understands Downing Street has been privately reassuring the sector of its support for the third runway, claim 1
- decision Prime Minister Andy Burnham Refused to give the third runway his backing in a string of media appearances over Labour conference, claim 2
- precedent Keir Starmer Gave the runway four-square support throughout his time in office, claim 10
- constraint Runway bidders Planning applications will be judged against the policy statement, with a vote now expected early next year, claim 12
- exposure Heathrow Airport Limited Conceded its initial 2035 target is unlikely; now expects to deliver by 2039 if planning stays on track, claim 14
- decision Transport sec. Heidi Alexander If the policy statement passes, will consider the applications and decide which, if any, the government should approve, claim 13
| Who | How | Kind | Claim |
|---|---|---|---|
| Aviation executives | City AM understands Downing Street has been privately reassuring the sector of its support for the third runway | exposure | 1 |
| Prime Minister Andy Burnham | Refused to give the third runway his backing in a string of media appearances over Labour conference | decision | 2 |
| Keir Starmer | Gave the runway four-square support throughout his time in office | precedent | 10 |
| Runway bidders | Planning applications will be judged against the policy statement, with a vote now expected early next year | constraint | 12 |
| Heathrow Airport Limited | Conceded its initial 2035 target is unlikely; now expects to deliver by 2039 if planning stays on track | exposure | 14 |
| Transport sec. Heidi Alexander | If the policy statement passes, will consider the applications and decide which, if any, the government should approve | decision | 13 |
What happened
- Before Labour's conference, Burnham told the BBC that Heathrow expansion was "a matter for London and Londoners".
- Advisers told the sector Burnham had not been fully briefed on the project's economic merits and that his remarks did not mean the government was going cold on it.
- Officials are reviewing consultation responses on the Heathrow Expansion National Policy Statement, and a vote on the final version is now expected early next year.
- Heathrow Airport Limited now expects the runway by 2039, having conceded it was unlikely to meet its original 2035 target.
Why it matters
- decision Suppliers and bidders weighing spend on the runway this quarter have to decide whether off-record adviser assurances are enough, or whether to hold commitments until the policy-statement vote.
- contradiction Advisers explain the Prime Minister's remarks as inattention, but his only considered view, as Manchester mayor, was to abandon the plans, so his position once briefed is genuinely open.
- constraint Firms raising money against the project can now cite only a hedged government line, where under Starmer they could point to four-square support from the top.
- exposure A 2039 opening keeps the project exposed to political change for longer, and a single change of Prime Minister has already unsettled its backers.
The reassurance Number 10 has been giving the industry is an account of the Prime Minister's attention [1][3]. "No 10 and internal advisers basically told us the Prime Minister hadn't really had the time to focus on aviation and the runway," one executive told City AM [4]. The message comes from staff, and it describes a question Burnham has not yet worked through in office. As mayor of Manchester, he called for the plans to be abandoned [7].
His public line, read closely, defers to the formal process. "I think it's right that we hear what people have said through the consultation," Burnham told the BBC [6]. Officials are now reviewing those responses ahead of the vote [12]. If the policy statement passes, Heathrow Airport Limited and the rival Heathrow West bid led by Surinder Arora are expected to submit proposals. Transport secretary Heidi Alexander will then decide which, if any, to approve [13].
In our view the vote is the first government position a firm could put in front of its board or its lenders. The case for trusting the private line sooner is that ministers' actions already point the industry's way. Burnham handed aviation minister Keir Mather a brief that explicitly includes oversight of Heathrow expansion [8]. Heathrow boss Thomas Woldbye has said business secretary Jonathan Reynolds gave the project his blessing when the two first spoke in July [9].
The department's own words are more guarded. A Department for Transport spokeswoman said expansion "has the potential to deliver around £40bn in economic benefits across the UK" [18]. She said the department was "considering the appropriate next steps" [16]. In a speech last year, former chancellor Rachel Reeves said the country could not "duck the decision any longer" [11].
The trade-off for a firm deciding this quarter is between committing money now, on assurances passed on by unnamed executives, and holding off until the vote. The runway's opening date has already moved back four years [17]. Measured against that timetable, waiting for the vote costs little. If the vote passes, Burnham's public reticence matters less, because the framework that planning applications are judged against will exist [12]. If it slips, firms that committed early will be relying on an unattributed briefing about a Prime Minister who, by his own advisers' account, had not been fully briefed [3].
What to watch
- Whether Burnham states a position on the third runway on the record once advisers have briefed him on its economic case.
- The Transport Committee evidence session this week, where MPs are expected to question Woldbye and Arora on the merits of expansion and their rival proposals.
- Whether the vote on the final Heathrow Expansion National Policy Statement holds to early next year or slips.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence45
- Adoption
- Insufficient
- Hype gap+15
- Incentives65
- Confidence40
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
Downing Street has been privately reassuring members of the aviation sector of its support for Heathrow's third runway, City AM understands.
- [2]
Prime Minister Andy Burnham refused to give the third runway his backing in a string of media appearances over Labour party conference.
- [3]
Government advisers assured the sector that Burnham's remarks were not a sign of the government going cold on the project, and that Burnham had not been fully briefed on its economic merits, three industry figures said.
- [4]
"No 10 and internal advisers basically told us the Prime Minister hadn't really had the time to focus on aviation and the runway."
- [5]
Burnham told the BBC the expansion was "a matter for London and Londoners".
- [6]
"I think it's right that we hear what people have said through the consultation"
ReportedSupportedSource: Andy Burnham, BBC interview ahead of Labour conference, via City AMView cited source - [7]
As Manchester mayor, Burnham called for the third runway plans to be abandoned.
- [8]
Burnham handed aviation minister Keir Mather a brief that explicitly included oversight of Heathrow expansion, which initially encouraged proponents.
- [9]
Heathrow boss Thomas Woldbye has said business secretary Jonathan Reynolds gave the project his blessing when the pair first spoke in July.
- [10]
Keir Starmer gave the runway four-square support throughout his time in office.
- [11]
Former chancellor Rachel Reeves said in a speech last year that the country could not "duck the decision any longer".
- [12]
Officials are reviewing responses to a consultation on the Heathrow Expansion National Policy Statement, the framework against which bidders' planning applications will be judged; a final version will be put to a vote now expected early next year.
- [13]
If the policy statement passes, Heathrow Airport Limited is expected to submit a proposal alongside Heathrow West, a rival bid led by Surinder Arora, and transport secretary Heidi Alexander will consider the applications before deciding which, if any, the government should approve.
- [14]
Heathrow Airport Limited conceded it was unlikely to hit its initial 2035 target for flights from the new runway and now expects to deliver the expansion by 2039, assuming the planning process remains on track.
- [15]
Woldbye and Arora are due to give evidence to the Transport Committee this week, where MPs are expected to question them on the merits of expansion and their proposals.
- [16]
"We are moving swiftly to review the responses received to the recent consultation on the policy framework underpinning expansion, and considering the appropriate next steps."
- [17]
Heathrow's expected opening date for the third runway has slipped four years, from 2035 to 2039.
- [18]
"Heathrow expansion has the potential to deliver around £40bn in economic benefits across the UK"
Sources
1 independent publisher whose own reporting we read for this story.
- cityam.comNumber 10 launches aviation charm offensive after Burnham third runway remarks
1 article · October 9, 2026
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- Jonathan ReynoldsFollow
- Keir StarmerFollow
- Rachel ReevesFollow
- UK Department for TransportFollow
- Heathrow Expansion National Policy StatementFollow
- Transport CommitteeFollow