In the summer of 2015 immigration officers from the Border Force were stationed in St George's University Hospitals NHS Foundation Trust to train staff to identify "potentially chargeable patients". In October 2016 the trust announced that it planned to require photo identity papers or proof of their right to remain in the UK such as asylum status or a visa for pregnant women. Those not able to provide satisfactory documents would be sent to the trust's overseas patient team "for specialist document screening, in liaison with the UK Border Agency and the Home Office.” It was estimated that £4.6 million a year was spent on care for ineligible patients. A pilot scheme to check whether patients were entitled to free NHS care in 18 NHS trusts, 11 in London, for two months in 2017 asked 8,894 people for two forms of ID prior to non-emergency care. Only 50 were not eligible for free NHS treatment. Campaigners claimed this was “part of the Government’s hostile environment policy”, and that in Newham hospital "you will see huge signs saying you may not be eligible for free NHS treatment".