Roger Hollis in 1956 and remaining in that post until his retirement in 1965. After Kim Philby's flight from Beirut to Moscow in 1963, rumours began to circulate that Hollis had alerted him to his impending arrest. Hollis was criticised for not alerting John Profumo, the War Secretary in Prime Minister Harold Macmillan's Conservative government, that he might have become entangled with a Soviet spy ring through his friendship with Stephen Ward, and his affair with showgirl Christine Keeler, who was introduced by Ward to Profumo. Soviet Naval Attache Eugene Ivanov was also involved with Keeler at this time, in the early
Profumo affair Ward's own activities had become a matter of official concern, and on 1 April the Metropolitan Police began to investigate his affairs. They interviewed 140 of his friends, associates and patients, maintained a 24-hour watch on his home, and tapped his telephone—this last action requiring direct authorisation from Brooke. Among those who gave statements was Keeler, who contradicted her earlier assurances and confirmed her sexual relationship with Profumo, providing corroborative details of the interior of the Chester Terrace house. The police put pressure on reluctant witnesses; Rice-Davies was remanded to Holloway Prison for a driving licence offence and held there