The state visit, which was the first to Britain by a French head of state in eight years and was supposed to have celebrated 80 years of British-French solidarity, was overshadowed by controversy.
It was a diplomatic incident so peculiar it was parodied in the television sitcom Yes, Prime Minister – but the British cabinet was not amused at the time.
Tom King, now Lord King of Bridgwater, the then Secretary of State for Employment, recalls the bizarre event in his highly entertaining memoir, ‘A King Among Ministers.’
‘It started in the normal way with a state banquet at Buckingham Palace. The next day he (Mitterand) went to Dartmouth to commemorate his sailing from there to join the French resistance in the Second World War. While he was on his way, the lead story on the BBC News was the shock discovery of Semtex explosive in the garden of the French embassy, with more of the explosive found in a bedroom at the Grosvenor House Hotel. It turned out that this room had been occupied by a French police inspector, a member of President Mitterand’s escort. It was some time later that I discovered the whole story. The inspector had applied to bring his own dogs for the visit, but, under the quarantine rules, he was refused permission. He was convinced that only his dogs were good enough to find the explosive, and that the British police dogs were not up to the job. He therefore decided to bring some Semtex and plant it in the embassy garden - but he was proved wrong, and the British dogs passed the test! Margaret Thatcher was understandably shocked by the behaviour of this man on the President's team, and President Mitterand, if clearly embarrassed, was said to have thought that the government should have prevented the BBC from reporting the story. It did lead to a temporary diplomatic frisson, but quickly the antics of this latter-day Inspector Clouseau were not allowed to interfere with the successful achievement of an important state visit.’