Radiographer Duncan Mackay, 55, who was on the St Thomas' Hospital picket line, said: "All emergency cases are going ahead in my department but the bulk of walk-in clinics and the elective procedures were cancelled." Major hospital trusts - including the Royal Free, Great Ormond Street, King's College Hospital and Imperial, which runs St Mary's, Charing Cross and Hammersmith Hospitals - confirmed operations, procedures or appointments had been cancelled.