The airport said the conflict is putting ‘notable downward pressure on traffic’, with Middle East routes down 25%.

Heathrow has warned its creditors the Iran war will dent passenger volumes at the west London hub in its biannual report

Airport has also been ‘engaging closely’ with regulator to discuss cost of plan to build third runway

The airport said the conflict is putting ‘notable downward pressure on traffic’, with Middle East routes down 25%.