All Nippon Airways (ANA) new Boeing 777 business and first class cabins unveiled

Japan's All Nippon Airways (ANA) has taken inflight entertainment to the next level with its newly unveiled first class and business seats, offering passengers the world's first 4K high definition screens in the sky.

In first class the giant, 43-inch (110 cm) screens are also the world's largest, according to the airline. The new seats, named "The Suite" by the airline, follow the first-class trend of Singapore Airlines and Middle Eastern carriers by creating enclosed booths for high-end customers using sliding doors. Movable partitions allow people travelling with a companion to pair their seats.

The new first class is just one of the changes ANA announced for its Boeing 777 aircraft. A new business class seat offers one of the largest business class spaces in the world, the airline said. The seat is twice the width of its former business class design.

Called "The Room", the seat features flexible dividers for personal privacy that can also be adjusted to share the space with travel companions.

Controversially, ANA has adopted the front-and-rear facing layout used by some other carriers for the business class cabin, meaning half the passengers will face towards the rear of the plane.

Changes in economy and premium economy are limited to new upholstery featuring traditional Japanese designs and improved touchscreens and headrests.

The new cabins were designed by Japanese architect Kengo Kuma and British designers Acumen and will be rolled out across the airline's fleet of 12 Boeing 777-300ER aircraft.

The first plane to feature the new cabins will fly the Tokyo-London route from August 2. ANA currently operates non-stop routes to Tokyo from Sydney using Boeing 787 Dreamliners and will launch a Perth-Tokyo route in September.