A campaign highlighting new areas of London affected by Heathrow expansion will be launched this afternoon.

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Click here to see the full-size map

With just weeks until the Airports Commission is due to make its final recommendation on expansion at Heathrow or Gatwick, Zac Goldsmith, Boris Johnson and Justine Greening have teamed up to show the effects they say expanding the west London airport will have.

As part of the new Heathrow flight path campaign, the MPs for Richmond Park and north Kingston, Uxbridge and South Ruislip and Putney, have revealed a map of large portions of London to be affected for the first time should the airport expand.

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Zac Goldsmith: A major opponent of Heathrow expansion

Speaking ahead of the launch, Mr Goldsmith said: "Implacable opposition to Heathrow expansion stretches from the affected boroughs to the very heart of Government, and as countless hundreds of thousands of new residents are made aware of the threat they face, the campaign can only grow.

"We have won the arguments on pollution, congestion, cost and competition, but the bottom line is that, politically, Heathrow expansion is undeliverable."

More than 725,000 people are already affected by noise pollution from the airport and the campaign group believes the number would increase to more than 1m if a third runway is given the green light.

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Justine Greening: Also says no to Heathrow expansion

Mr Johnson said: "Zac Goldsmith has run a determined campaign to save London from the huge environmental damage a new runway at Heathrow would cause.

"The website he is launching today will bring home to Londoners how many more houses, schools and hospitals will be overflown if this undeliverable plan is approved.

"The Airports Commission must realise that, if it is mad enough to recommend a third runway at Heathrow, the backlash from Londoners will ensure it is never built."

The website due to be launched will show the flight path corridors predicted for an expanded Heathrow, but as the airport has not released its final plans, the map is subject to change.

To find out more information about the campaign, visit heathrowflightpaths.co.uk.