On July 2022, Morgan-Rose Hart, an aspiring vet with a passion for wildlife, died after she was found unresponsive at a mental health unit in Essex. Her death was one of four involving a hi-tech patient monitoring system called Oxevision which has been rolled out in nearly half of mental health trusts across England. Oxevision's system can measure a patient's pulse rate and breathing without the need for a person to enter the room, or disturb a patient at night, as well as momentarily relaying CCTV footage when required. Oxehealth, the company behind Oxevision, has agreements with 25 NHS mental health trusts, according to its latest accounts, which reported revenues of about £4.7m in ... 2023. But it is claimed in some cases staff rely too heavily on the infra-red camera system to monitor vulnerable patients, instead of making physical checks. There are also concerns that the system which can glow red from the corner of the room " may worsen the distress of patients in a mental health crisis who may have heightened sensitivity to surveillance or control. Sophina, who has experience of being monitored by Oxevision while a patient ... said: "I think it was something about the camera and it always being on, and it's right above your bed. "It's the first thing you see when you open your eyes, the last thing when you go to sleep. I was just in a constant state of hypervigilance. I was completely traumatised. I still felt too scared to sleep properly."