Overlooked facts of NHS history

In your special supplement marking 70 years of the National Health Service (23 May), the article on the advances that have helped the NHS along the way missed an extremely important point.The NHS has been of huge benefit to the UK population but its skills, innovations and associated research have hugely helped medicine worldwide.You mention scanners (CT, MRI, ultrasound), all invented and developed in the UK in association with the health service.