Don't really see that it is much different to the Police PNC ? Scale - the NHS is IIRC the single largest employer in Europe. make it available to mobile devices Yet another piece of technology in the ambulance to distract the crew (which is likely to be unreliable due to cost constraints and mobile network issues). As our esteemed host has already pointed out those for whom immediate access to medical info is important already make the necessary provision and they have the most incentive to ensure it accurate and up to date. you can design out stupidity and fraud No you can't - good design and operational controls can minimise it, but that take time and costs money. You can design in policy controls to enforce policy, but again it takes time & money. I can understand why someone might be happy their medical records are available to anyone in the NHS at the touch of a button. Given the scale of the project and the real world observations of our host you're effectively making them available to anyone who chooses to make a small effort to get them. This might not cause you any concern but there are many others who may not be so sanguine.