Heathrow is to invest £3bn in developing infrastructure in a major boost to Britain’s leading airport.
In a signal that the company believes that it could still be backed by the Government, which is undertaking a review of runway capacity, the airport group will announce the modernisation plans later this month.
They will cover the period between 2014 and 2019 and follow a £5bn investment plan between 2008 and 2013.
Alongside the development plans, Heathrow will also reveal a major increase to airline charges, with rises in costs per passenger well above inflation.
The reason for the increase in the charges is because fewer passengers have travelled through the airport than originally predicted.
Airlines will have to bear the cost of the charges, which could rise to as high as £25 per passenger from around £17 per passenger now.
Sources close to the airport said that the business was bound by regulations from the Civil Aviation Authority, which predicts the number of passengers passing through the airport. Following the financial crisis passenger numbers were 10pc lower than the CAA predicted, meaning that Heathrow now has to cover a £646m shortfall.
It is also still paying for investments made in the new Terminals 2 and 5.
Colin Matthews, the chief executive of Heathrow, which was formerly known as the British Airports Authority, will argue that Heathrow must continue investing if it is to have any chance of winning the battle to retain its status as the UK’s leading airport .
Sir Howard Davies, the former executive chairman of the Financial Services Authority, has been commissioned by the Prime Minister to review aviation needs in the UK.
Sir Howard said on Friday that he will look at proposals to rebuild Heathrow as a four-runway airport to the west of the present site.
Other contenders for airport development include keeping Heathrow where it is and adding a third runway, expanding Stansted or building a new airport in the Thames Estuary.
It is thought Sir Howard will choose three options ahead of the next election, before completing his review after 2015.
Heathrow will say that the £3bn will be used to continue investment in Terminal 5 and Terminal 2, which will be further extended.
Baggage handling facilities will also be improved. Luggage handling is one of the key issues for customer satisfaction and so far Heathrow has reduced the number of bags lost per 1,000 customers from 40 in 2007 to 15 in 2012.
Customer satisfaction levels have also improved, with passengers who said that their experience at Heathrow was “excellent” or “very good” rising from 38pc in 2006 to 75pc in 2012.
New stands will also be built for the Airbus A380, the double-decker airliner which can carry almost 850 passengers. It is such a large aircraft that it needs special facilities at any airport it uses.
“We want Heathrow to have more facilities for the new aircraft, which is much quieter, than any other European hub,” one source close to Heathrow said.