Milligan joined The Economist in 1970, and was industrial editor and chief EEC correspondent from 1972 to 1980. In 1976, he published a book, The New Barons, on British trade unions in the 1970s. Still working for The Economist, he took a position as presenter of The World Tonight on BBC Radio 4 from 1980 until 1983. He later became foreign editor and Washington correspondent at The Sunday Times from 1984 until 1987, before rejoining the BBC in 1988 as a European correspondent. Sunday Times editor Andrew Neil described Milligan: "He possessed an enquiring, original intelligence, a wide knowledge of foreign and domestic affairs and he was great fun to work with, his infectious laugh filling our editorial meetings, where he played a major role in defining the paper's policy positions".
Politics
Milligan left the Conservative Party upon the formation of the Social Democratic Party in 1981. However, he rejoined the Conservatives and in 1990 was selected as the prospective parliamentary candidate for Eastleigh. He became secretary of the Conservative Foreign and Commonwealth Council in 1991 and was a member of the moderate Bow Group. At the 1992 general election, Milligan was elected as Member of Parliament for Eastleigh with a majority of 17,702. Seen as a 'rising star' in the party and noted for his Commons interventions on foreign policy, he was appointed Parliamentary Private Secretary to Jonathan Aitken, Minister of State for Defence. His last contribution in Parliament was in a debate on the Energy Conservation Bill on 4 February 1994.
Death
Milligan was found dead in his house at 64 Black Lion Lane, Hammersmith, London, by his secretary Vera Taggart on 7 February 1994. Milligan had failed to appear in the House of Commons as expected, and so Taggart went to look for him. Milligan's corpse was found naked except for a pair of stockings and suspenders, with an electrical flex tied around his neck, a black bin liner over his head and an orange in his mouth. The coroner concluded that he had died in the early hours of 7 February. The pathologists report into Milligan's death discounted the possibility of murder, lending weight to the belief that he died accidentally, as a result of autoerotic asphyxiation. No drugs or alcohol were found in his blood, and no substances were found to have contributed to his death.
Aftermath
Milligan's death significantly contributed to ending John Major's "Back to Basics" policy initiative. In an interview after Milligan's death, Major said that "What I suppose does seem as though it is probable: he must have been pretty unhappy, pretty miserable". Major's characterization of Milligan was criticised by Milligan's cousin, Judge Tim Milligan, who wrote that "...with respect to the Prime Minister, Stephen was neither miserable or unhappy. On the contrary, he was thoroughly fulfilled and happy in his work in Westminster and his Eastleigh constituency, which gave him the chance to be of service to others as he always wished." Milligan left an estate worth £846,860, leaving £5,000 to Oxfam and £500 to St Peter's Church, Hammersmith. Milligan's death triggered a by-election for his Eastleigh seat, which was held on 8 June. The by-election was won by the Liberal Democrat candidate David Chidgey, who would hold the seat until the 2005 general election. The Conservative candidate, Stephen Allison, came third in the by-election. Following Milligan's death, Hat Trick Productions, the producers of the BBC's satirical television programme Have I Got News For You, sent black bin bags, oranges and black stockings to journalists to publicise a new series of the show. The BBC subsequently apologised to Milligan's parents for the incident.