Britain's Heathrow Airport said it could serve an additional 10 million passengers per year by 2031 by making changes to existing terminals if it can increase fees, as it presented its plans for the next five-year period to the regulator on Friday.

Airlines are warning that air travellers will be forced to pay for Heathrow Airport’s £10bn investment through higher air fares as it aims to add an extra 10 million passengers per year by 2031. The Heathrow plan,

Heathrow Airport has unveiled a £10bn investment plan to expand capacity, aiming to handle an extra 10m passengers per year by 2031. The plan forms the core of the airport's 2027-2031 business proposal,

London's Heathrow Airport has unveiled a £10 billion ($13. 5 billion) investment plan to expand capacity, aiming to handle an extra 10 million passengers per year by 2031.