Andrew Hill and aid worker Dylan Healy are understood to be under investigation as mercenaries.
The former Tory MP resigned after being accused of groping two men in a private members' club.
The Royal College of Nursing said the decision shows "how little" the government valued NHS staff.
The NHS website has had thousands more visits this week after the campaigner's death.
The singer tells the crowd at her first public concert in five years she is "so happy" to be back.