An NHS psychiatrist is among 33 British nationals still missing in Nepal after a devastating flash flood tore through the region on Wednesday.The catastrophic floods that struck Nepal and Tibet are reported to have surged as high as 650ft, killing at least 538 people and leaving more than 1,500 missing. Desperate families of those who were visiting the mountainous region have now flown out in a bid to find their loved ones. Among them is the wife of 54-year-old Pravin Atmakur, who was leading a group of 77 pilgrims to Mount Kailash in Tibet when the floods struck.Manjula Atmakur arrived in Kathmandu on Friday morning after travelling from Britain to search for her husband, who has not been heard from since the disaster.The couple both work as consultant psychiatrists for the NHS, while their son studies at Trinity College, Cambridge.Mrs Atmakur told the Telegraph in Nepal: 'I am emotionally broken. I don't know how my husband is. In which situation. I want him back.'She added: 'I came here with the only agenda that I want to take Pravin back home alive.' Pravin Atmakur was leading a group of 77 pilgrims to Mount Kailash in Tibet when the floods struck A millionaire family-of-four from Surrey including a former Mrs India UK are also among Britons missing in Nepal A now poignant photo of an Alpine Eco Tours tour group cheerfully posing in front of their bus. The group included a girl of 13 The catastrophic floods that struck Nepal and Tibet are reported to have surged as high as 650ft, killing at least 538 people and leaving more than 1,500 missingMrs Atmakur last spoke to her husband on August 15, when he began the pilgrimage. She believes he had completed the pilgrimage and was returning from Tibet into Nepal when the floods struck at around 9am on Wednesday.Nepal is now facing what officials described as a scene of 'devastation beyond imagination' after a glacier collapse unleashed a 'tsunami from the sky', sending torrents of water crashing through villages and tourist hotspots. Footage showed the mudslide racing down the Trishuli River valley and through Gyirong Port, a major border crossing between Nepal and Tibet used by thousands of pilgrims travelling to Mount Kailash each year.Mrs Atmakur learnt of the disaster from her brother-in-law and immediately began preparing to travel to Nepal.Her 19-year-old son Nalin, who studies engineering at Trinity College, Cambridge, was travelling at the time. She waited for him to return so they could fly out together.She reached Kathmandu on Friday and went directly to the British embassy, but said she had received little help.Mrs Atmakur said her husband had devoted much of his life to helping others and that she now wanted authorities to help bring him home. A millionaire family-of-four from Surrey including a former Mrs India UK are also among Britons missing in Nepal.Ex-banker and beauty pageant winner Surabhi Sahu, 44, her businessman husband Santosh, 46, their son Spandan, 18, and daughter Syna, 13, had been on an adventure trek across the Nepal-China border.Mr and Mrs Sahu ran a successful technology company in London together before he set up a thriving pharmaceutical business. The family live in a £1.3million six-bedroom house in Cobham, Surrey. Desperate families of tourists who were visiting the mountainous region have now flown out in a bid to find their loved ones Pictured: Mrs Sahu, a high-flying chemistry graduate from Mumbai who became a banker before moving to Ireland to work for Dell Computers Nelly Chhetri (pictured), 18, and her mother Yashika Basnet, 56, an NHS worker, had gone on the trip as part of a tour group, and have not been heard from sinceThey travelled to India last week and then on to the Nepalese-Tibetan trek. They were due to return in ten days before the start of the new school year.A poignant final photograph of the family with their tour group, mostly made up of Britons, shows them smiling beside their bus against the peaks of the Himalayas.The Alpine Eco Tours group was last heard from as they crossed the frontier from Nepal into Tibet, around the time on Wednesday that a horrifying torrent of ice, mud and rocks engulfed the Gyirong border crossing.CCTV footage showed people running for their lives as the disaster struck. Tour organisers have been frantically trying to reach the group ever since. There are hopes the tourists are alive and waiting to be rescued, but phone lines are down and the military has struggled to reach the mountainous area.The Sahu family were well-travelled and on a once-in-a-lifetime pilgrimage to Mount Kailash, a religious site for Hindus and Buddhists in Tibet. Mrs Sahu is a chemistry graduate from Mumbai who became a banker before moving to Ireland to work for Dell Computers.Her husband Santosh is an Irish citizen, and the family moved to Surrey where they became beacons of their community. In 2018, Mrs Sahu won the Mrs India UK beauty contest – after being encouraged to enter it by her family – which she described as 'a dream come true'.She added it showcased 'the best in women… not just in respect of physical beauty but in the many other capacities in which they are not always acknowledged or appreciated'.As well as her successful business career, Mrs Sahu is an avid reader who promotes literature to her legion of Instagram followers. She has posted photos of herself visiting favourite spots of England, including the Cotswolds.Her former banker husband Santosh has gone from strength to strength and is the founder and chief executive of Charac, a digital platform helping pharmacies improve deliveries to patients.Their son Spandan is due to start a law degree at Durham University.A former grammar school pupil and her NHS worker mother are also among those missing after travelling to the region on a pilgrimage.Nelly Chhetri, 18, and her mother Yashika Basnet, 56, had joined a tour group and have not been heard from since.Nepalese authorities have declared them missing, and their worried family said they have received no contact from the UK Foreign Office.Nelly, an 'ambitious' former pupil of the Invicta Grammar School for girls, in Maidstone, Kent, hopes to go to university next year, her cousin Nickie Chhetri told the Daily Mail.She has just completed a sixth-form course in health and social care at Uxbridge College, in London. The deadly deluge is one of the country's worst natural disasters in recent memory A drone view of a broken bridge and damaged houses after the flash floods and mudslide, at Devighat, Nuwakot district, Nepal A view of a home damaged by flash flooding in the Devighat area of the Nuwakot district in Nepal Pramod Poudel's mother Tulisa and brother Pradip (right) are missing Sarada Simkhada, a senior nurse at the Darent Valley Hospital in Dartford, left for Nepal last Saturday for a pilgrimage Among those still missing is Samitra Sapkota, the 25-year-old wife of British man Pramod Poudel.Poudel, a 35-year-old Briton who runs a Nepalese street food company in Sussex, told The Times on Thursday evening that he had spoken to his wife the day of the flood and that everything was fine: 'I was talking to my wife at 4.30am on Wednesday and everything was absolutely fine.'After 6am I phoned her again and of course I couldn't get through … I initially thought it was only a small flood so I didn't think anything of it.'She was living in Sole village in the Nuwakot district of Nepal, which has been devastated by the flood.The couple, who met in Croatia have been married for just four months. Mr Poudel's mother Tulisa, brother Pradip and uncle Madav. His father Purusottam has been found alive.Before he got on a plane to head east last night, Mr Poudel said: 'I have seen pictures of where my hometown used to be, where my family used to live - my mum, my dad, my brother, my wife...there's nothing there.'The bridges are broken so no one can get there.'Nepalese police say water dam on the Tibet side has burst again. All security personnel, rescue workers and members of the public deployed in rescue and relief efforts were told to remain on high alert and immediately move to a safe location if necessary.Sunil Amin, from Croydon, described the 'horrible, horrible feeling' of repeatedly trying to phone his wife, Hema Amin, 63, who was on a pilgrimage with Alpine Eco trek from Nepal to Tibet with her sister. Nabhi Das from Streatham in South London also remains unaccounted for Leena Bector, 53, from Slough, Berkshire, has also not been heard of after travelling to the region to see the Himalayas'I keep trying to call her. I've been trying, trying, trying,' he said. 'It just rings out or doesn't get through. I'm devastated.'Sarada Simkhada, 55, was also on a pilgrimage, following in the footsteps of thousands of other Hindus up Mount Kailash.The mountain is a sacred site for both Hindus and Buddhists, and is believed to be the cosmic home of Lord Shiva and Goddess Parvati. Sarada, a senior nurse who lives in Dartford, had travelled to Nepal on Saturday before she joined other pilgrims. Her childhood friend Rajendra Pudasaini said she is known for taking part in the community and always 'working incredibly hard' at Darent Valley Hospital. Sarada trained as a nurse in Kathmandu, before moving to London. Her relatives were last in contact with her when she was staying at the Kailash Hotel in Timure on the Nepal-China border, where she was waiting for Chinese customs officers to approve her visa. Roshan Panday, owner of Fishtail Tours and Travels Group, had a tour group of 27 including Briton Leena Bector, 53, from Slough, and he said 'no one is answering their phones'.He said they had sent a video just nine minutes before the disaster struck, adding: 'Absolutely everything's under the mud. We tried calling the drivers. We tried calling the guides. We tried calling them all, but no one was answering.'Ms Bector's husband, Bhupesh Bector, told The Times he was frantically checking his iPhone to check her location but it had not changed for more than seven hours. He flew out last night, saying: 'I know that she's in Nepal for sure, so even if they find her today or tomorrow, I need to be there.' Among those still missing is Samitra Sapkota (left), the 25-year-old wife of British man Pramod Poudel (right). Neither are related to the Sahu family Bipin Patel, 66, and Mala Patel, 60, are among those missing after flash floods in Nepal. Issue date: Friday August 28, 2026Another missing Briton is Nabhi Das, from Streatham in south London, family members confirmed. The University of Kent graduate, originally from Kenya and thought to work in finance, has not been heard from. Foreign Office minister Stephen Doughty has said the number of 33 Britons missing is still the same, but 'may fluctuate'.Speaking to Sky News, Mr Doughty said: 'This is a devastating and deeply worrying time for the families, and obviously our teams here in this centre and in Kathmandu and Beijing are in close contact with families, and that team is going out to the region to support families that may choose to travel out.'But the number that's been reported of 33 is certainly the information that we've had from the Nepal government, that's public, but obviously these figures may fluctuate.'This is a very, very complex situation, very remote areas, and you'll have seen the scale of the devastation.'We're in close contact as well with the tour operators. There are a number of tours operating, those on religious pilgrimages, those trekking in the region.'But we know this is going to be a deeply devastating and difficult time, and the job of our teams will be to try and work with those families to get them the information they need in their hour of need.'The flooding was likely caused by a huge chunk of a glacier that broke off and temporarily dammed a river, according to preliminary investigations by scientists. That may have led to the backed-up water surging downstream with enormous force a few hours later, they suggested.Scientists are still piecing together information from satellite and ground-level data to figure out exactly what happened to cause the flood.The US Geological Survey on Wednesday reported a magnitude 5.2 glacier collapse that sent debris flowing downstream with catastrophic impact on communities.Rescuers continue to search for the thousands still missing, as Nepali and Chinese authorities warned of further flooding from a lake that formed upstream after Wednesday's disaster and was already overflowing. They urged people in potentially affected areas to move to safer ground.On Friday, footage emerged showing locals sprinting for their lives as a catastrophic flood tore through a town in Nepal's Rasuwa region on Wednesday.The deadly deluge is one of the country's worst natural disasters in recent memory.In the six-minute long clip, terrified people scramble to escape on foot and in vehicles as powerful floodwaters tear through the area, dragging debris along with them.Meanwhile, panic was sparked and fears of a new tsunami mounted when a lake dammed by avalanche debris in the Nepalese region burst through its banks.Chinese authorities have since deemed the risk as manageable, allowing halted rescue operations to resume.Helicopter rescue operations were abruptly halted on Friday morning with locals in Rasuwa valley seen running to higher ground after water started flowing form the newly-formed body of water.The lake had formed up stream in Tibet some six miles from Gyirong port, the border crossing with Nepal that was engulfed by mud and floodwater on Wednesday.China's Ministry of Water Resources said on Thursday that the lake held around two million cubic meters (70 million cubic feet) of water and was expected to receive another three million cubic meters (106 million cubic feet) over the next three days.