Heathrow third runway

Third runway

Existing runways

M25 tunnel

Expansion

Existing boundary

One mile

Sipson

M25

J15

M4

London

Harmondsworth

Third runway

Existing runways

M25 tunnel

Expansion

Existing airport boundary

One mile

Sipson

M25

J15

M4

London

Harmondsworth

Third runway

Existing runways

M25 tunnel

Expansion

Existing airport boundary

One mile

Sipson

Reservoirs

M25

J15

M4

London

Harmondsworth

Third runway

Existing runways

M25 tunnel

Expansion

Existing airport boundary

One mile

Sipson

Harlington

Reservoirs

M25

J15

M4

London

Stanwell

Moor

Colnbrook

Harmondsworth