Heathrow Airport has a "abysmal" record of controlling building costs said the boss of British Airways-owner IAG.

Willie Walsh told the BBC that other companies should be allowed to design and build any new terminals at Heathrow.

Heathrow said it did not believe such a model was appropriate.

The government is due to publish final proposals for a third runway at Heathrow in the next few months. MPs will then vote on those plans.

Read more: http://www.bbc.com/news/business-42936849