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Heathrow's third runway: the options at a glance Heathrow's third runway: the options at a glance
(about 11 hours later)
A runway to the north-westA runway to the north-west
Pros and cons: relatively easy to build, full-length – the surprise package of the three. Comes in the middle in terms of expense and noise impact. Moves a bit nearer Windsor Castle over the M25 – bad for the Queen but further from densely populated London boroughs. Heathrow suggests this could pair up with a second parallel runway for a four-runway hub.Pros and cons: relatively easy to build, full-length – the surprise package of the three. Comes in the middle in terms of expense and noise impact. Moves a bit nearer Windsor Castle over the M25 – bad for the Queen but further from densely populated London boroughs. Heathrow suggests this could pair up with a second parallel runway for a four-runway hub.
What's demolished: Harmondsworth Moor, Harmondsworth, and Longford - 950 homes, and the Tithe Barn and St Mary's Church in Harmondsworth, both sites of significant heritage value.What's demolished: Harmondsworth Moor, Harmondsworth, and Longford - 950 homes, and the Tithe Barn and St Mary's Church in Harmondsworth, both sites of significant heritage value.
Cost: £17bnCost: £17bn
Ready: 2026? Ready: 2026?
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A runway to the south-westA runway to the south-west
Pros and cons: trickier to build, going over the M25 and two local reservoirs. Minimises the numbers of people suffering the very worst noise – but potentially opens up the most opposition with flight paths likely to multiply over the poshest parts of Richmond.Pros and cons: trickier to build, going over the M25 and two local reservoirs. Minimises the numbers of people suffering the very worst noise – but potentially opens up the most opposition with flight paths likely to multiply over the poshest parts of Richmond.
What's demolished: the entire village of Stanwell Moor, 850 homes, and a big dollop of reservoir.What's demolished: the entire village of Stanwell Moor, 850 homes, and a big dollop of reservoir.
Cost: £18bnCost: £18bn
Ready in: 2029? Ready in: 2029?
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A runway to the northA runway to the north
Pros and cons: this is the nearest to the former third runway plan canned in 2010 - 800m longer though it still isn't quite a full-length runway as far as the very biggest planes go. Heathrow's least-favoured option now – but it already owns lots of the land so may be easier as far as planning permission goes, and is quickest and cheapest.Pros and cons: this is the nearest to the former third runway plan canned in 2010 - 800m longer though it still isn't quite a full-length runway as far as the very biggest planes go. Heathrow's least-favoured option now – but it already owns lots of the land so may be easier as far as planning permission goes, and is quickest and cheapest.
What's demolished: Sipson (again), Harlington, and Cranford Cross – a total of 2,700 homes.What's demolished: Sipson (again), Harlington, and Cranford Cross – a total of 2,700 homes.
Cost: £14bnCost: £14bn
Ready by: 2025? Ready by: 2025?
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* All cost and construction time figures are estimates supplied by Heathrow* All cost and construction time figures are estimates supplied by Heathrow