Rob Behrans, who is stepping down, said he discovered documents had disappeared and care plans been retrospectively altered in an attempt to hide malpractice.
The drugs will be available at some private clinics, prompting Liz Truss to encourage support for her bill which would ban the drugs privately and in the NHS.
The steep decline in applications comes as analysis revealed the NHS’s reliance on overseas staff, who account for 30 percent of nurses and health visitors.
5.8 million more patients registered with GP surgeries in England than figures say exist in the country after investigation into possible fraud shelved.