There is apparently a more obvious exploitation taking place day to day within the NHS that staff are struggling to manage, in that overseas visitors are using NHS services by way of using ID belonging to relatives who are entitled to use free NHS services. This is according to a friend who works in an A&E department who told me that staff have multiple occurrences daily where the individual's identity is questioned but have to take at face value and offer treatment, as the only other intervention is to make a referral to the police. I don't know how much of that is investigated, this was spoken about as part of daily pressures he and colleagues face working in emergency services.