Singapore Airlines is investing a staggering £1.2billion in a major cabin overhaul, unveiling a new generation of luxury flying across all four classes.From enormous first-class beds to redesigned economy seats, the eye-watering makeover promises to transform all four long-haul cabins, with everything from premium economy to business class getting a major overhaul.Now, travel expert Nicky Kelvin, head of content at travel website The Points Guy, and colleague Liam Spencer have been given an exclusive look at the new designs during a trip to Singapore, putting the revamped cabins and their headline-grabbing features under the microscope.The pair explored all four classes, getting up close with the new seats, high-end amenities and cutting-edge technology ahead of the cabins’ expected launch at the end of 2027.And there’s plenty to get excited about, even at the back of the plane.Kicking off their tour with economy, Liam highlights what he describes as a ‘whole new ergonomic feature’ in the redesigned seats.’It has a nice amount of recline. It feels very comfortable, and apparently you’re meant to have more space around your feet and shins in front of you, so you’re not going to be knocking your knees into the back of the seat,’ he says.[embedded content] Liam checks out the upgraded economy class seatsAs for the ‘biggest improvement’, Liam pulls out his screen – the biggest the airline has ever had in this class. Moving to premium economy, Nicky says: ‘I’m already loving these squishy seats, contoured and padded.’ He adds that it is about 2in bigger than the current seats, and also has a fully adjustable headrest, legrest and footrest.’It was significantly more comfortable than the economy seats,’ he observed.Next, of course, was the business class cabin. Liam says: ‘Finally, Singapore Airlines has a fully closing door which gives you that privacy everyone has been asking for.’BMW Designworks was behind the design of the cabin, and Liam says: ‘It does have that sports car vibe. It feels very sleek, very smooth.’ Next, Nicky takes an inside look at the premium economy cabin Inside business class, the seats are reminiscent of ‘sports car’ designThe foot wells are ‘massive’, he says, adding: ‘If you’re travelling as a pair, you can set the seats up so it’s like you’re travelling in a double bed in the sky.’Bedding includes a memory foam mattress, too, and you’re given pyjamas (called ‘sleep suits’). He does, however, address the controversial colour palette. It has come under fire for the ‘cold vibe of the grey and yellow. I will say, it doesn’t feel very Singapore – I do wish they’d stuck to their roots a bit more.’The crown jewel of the cabin is, of course, the first class offering. Singapore Airlines now offers, for £10,000, a first-class double bed even larger than a UK king-size mattress.Claimed to be ‘the largest in the sky’, the 5ft-wide beds are part of the cabin redesign to keep hold of super-rich passengers as rival airlines step up the competition. Next on the agenda is the spacious first class suite The lie-flat double bed is the main event, with Nicky point out how spacious it isIt is marginally bigger than the UK’s most popular king-size mattress, according to Which?, which measures 200cm by 150cm. ‘Set up in bed mode’, says Nicky, ‘this looks incredible. Soft, comfortable.’He adds: ‘But the best thing is, I love how with the bed made there’s room for you to stand in between the door and the seat. You don’t have to awkwardly creep your way out.’Nicky takes a look around the first class suite, saying: ‘The seat itself is luxurious leather, and adjusts every way you can think of. ‘Side wings, lumbar support, leg rests, plus an ottoman opposite so someone can join you for dinner at the huge table, which also doubles as a desk with wireless charging.”Giant’ screens and noise-cancelling headphones are on hand for your journey, too. Singapore Airlines has unveiled a first-class double bed so large it is bigger than a standard UK king-size mattress – and it is all part of a £1.2billion cabin redesign across the carrier’s fleet The pair share information on the new menu and amenity offeringsNew amenities include new duvets, pillows and a ‘mega-soft sleeper suit’. The five-star airline’s upcoming renovation will also include 4K high-definition displays, Bluetooth audio passengers can connect their personal headphones to, and more than 2,500 entertainment options available during the flight.Furthermore, more than 100 new and refreshed dishes have been introduced across all cabin classes.Nicky concludes: ‘We think Singapore Airlines has raised the bar today.’