 He was later described by Margaret Thatcher as a national hero, and was a guest at her 80th birthday celebrations in 2005.His marriage to Valerie Hobson lasted until her death on 13 November 1998, aged 81; Profumo died, aged 91, on 9 March 2006.In December 1963 Keeler pleaded guilty to committing perjury at Gordon's June trial, and she was sentenced to nine months' imprisonment, of which she served four and a half months in prison.