Boris Johnson challenges party's pledge to build a third runway at Heathrow

Senior Tory Boris Johnson today challenged his party's manifesto pledge to build a third runway at Heathrow Airport.

Mr Johnson, who hopes to be re-elected as Conservative MP for Uxbridge & South Ruislip was meeting voters in the Labour-held marginal of Brentford & Isleworth.

The former London mayor told ITV News the runway would be 'very difficult to deliver' because of noise and pollution concerns.

Foreign Secretary Boris Johnson Credit: PA

His comments were echoed by Shadow Chancellor John McDonnell. Both men represented constituencies affected by aircraft noise.

I don't think it's the right solution. I'll be honest with I think it's very difficult to deliver. I just think noise pollution, the vehicular pollution, the air pollution, these are things that really have to be addressed.