Heathrow Airport has unveiled a raft of improvements as part of Terminal 4's ongoing multi-million pound regeneration investment.
An innovative ceiling in the international departure lounge is one of the main improvements made. This includes more than 800 LED ceiling lights.
This lighting system is capable of creating over 16 million colours and has been turned on by officials at the terminal to create a "unique ambiance" for passengers to enjoy.
Designed to mimic the natural changes of light outside, the ceiling is part of a €30 million (£24 million) regeneration project at Terminal 4, which was originally opened by the late Princess Diana in 1987.
Since 2010 there has been a number of other improvements made to Terminal 4. These have been made in an attempt to make passengers' journeys better.
These extra improvements have included more than 100 extra check-in desks, which replaces over 2,000 seats and upgrades to the departure gates and security search areas.
All of this work has been done with no disruption to flights in or out of the country, according to Heathrow.
Heathrow was rated as one of the worst major airports in Europe in 2006, with just 41 per cent of passengers describing their experience at the airport as either Excellent or Very Good.
It is hoped that this continued development will improve passengers' experiences at the airport.
Following on from the opening of Terminal 5 and the refurbishment of Terminals 1 and 3, as well as these improvements to 4, 75 per cent of passengers at the airport now rate their experience as Excellent or Very Good.
Of the improvements, operations director of Terminal 4 Tom Willis commented: "This impressive and innovative ceiling is another demonstration of how we're improving the facilities for our passengers. It will change the atmosphere of Terminal 4 and help us to continue to make journeys better."
