Broadhurst has served with the Metropolitan Police Service for 32 years in uniform, primarily in South-East London. He was, for four years, Sutton Borough Commander and Lambeth deputy Borough Commander for a year. For four years he was the Link Commander for South East London, with responsibility overall for all eight Boroughs in that area. In July 2006 he was appointed Commander Public Order and Pan London Operational Support. He has experience as a hostage negotiator, during the Stansted AirportAfghan Airlines hi-jack he was the Negotiator Team Leader. At the longest siege in the UK, the Hackney Siege, which ended with the death of Eli Hall, he was the Gold Commander -operational chief officer,. He speaks at National Siege Management courses, and has contributed to the FBI Crisis Negotiator Course at the United States FBI Academy. Since 1990 he has commanded public order events, including many large-scale demonstrations. He commands ceremonial events such as the State Opening of Parliament, and Trooping the Colour. At the wedding of the Prince of Wales and the Duchess of Cornwall he was the Gold Commander. In 2007 he was in charge of policing for the London leg of the Tour de France and for the 2008 Summer Olympics torch relay. He is leading operational planning for the 2012 Olympics. He was involved in policing the 2009 Gaza Protests in London.
He was in overall charge of Operation Glencoe, during the 2009 G-20 London summit protests. On 9 April he said "The eyes of the world were focused on London. While it was extremely hard work, I am happy with the way the day progressed, as the overall mood of the event was good." With his team he faces questioning by the Metropolitan Police Authority about the death of Ian Tomlinson, and also face questions about whether the stark warnings of violence he gave before the summit fuelled confrontation. He was accused of misleading MP's in a Select Committee report on the G20. He incorrectly informed them that no undercover police officers were operating after an MP raised concerns about the use of agent provocateurs. Later it was revealed that 25 undercover officers were deployed and were mixing with demonstrators. Once this was revealed, Broadhurst claimed that the deployment of undercover officers was unknown to him, and that the plainclothes officers were "evidence gatherers".
