First, the question of people. The provision of emergency care for UK citizens abroad through the European Health Care with a hard Brexit will be lost without specific negotiation. UK retirees in other member states are potentially vulnerable as they will lose rights for obtaining health care. There could be a major NHS staffing crisis if EU citizens working as health professionals do not have their rights to remain guaranteed (or even find the atmosphere unwelcoming). For example, in London there are estimates that some 30 per cent of health and social care professionals are from other member states. It is very hard to see how they could be replaced in any reasonable time frame. These are not simple issues, for they touch on law concerning pensions, residence, professional qualifications, insurance and labour contracts. Managing them badly could have immediate, unexpected and negative consequences for the NHS, for UK citizens abroad and for EU citizens in the UK.