Defence Intelligence

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Defence Intelligence (DI) is an organisation within the United Kingdom intelligence community which focuses on gathering and analysing military intelligence. It differs from the UK's intelligence agencies (MI6, GCHQ and MI5) in that it is an integral part of a government department – the Ministry of Defence (MoD) – rather than a stand-alone organisation. The organisation employs a mixture of civilian and military staff and is funded within the UK's defence budget. The organisation was formerly known as the Defence Intelligence Staff (DIS), but changed its name in 2009. The primary role of Defence Intelligence is that of 'all-source' intelligence analysis. This discipline draws information from a variety of overt and covert sources to provide the intelligence needed to support military operations, contingency planning, and to inform defence policy and procurement decisions. The maintenance of the ability to give timely strategic warning of politico-military and scientific and technical developments with the potential to affect UK interests is a vital part of the process. DI's assessments are used outside the MoD to support the work of the Joint Intelligence Committee (JIC) and to assist the work of other Government departments (OGDs) and international partners (such as NATO and the European Union). It is this 'all-source' function which distinguishes Defence Intelligence from other organisations such as SIS and GCHQ, which focus on the collection of 'single-source' Human Intelligence (HUMINT) and Signals Intelligence (SIGINT) respectively. As such Defence Intelligence occupies a unique position within the UK intelligence community. The organisation is headed by the Chief of Defence Intelligence, currently Lieutenant General Matthew Jones. As of December 2025, it is now part of the wider Military Intelligence Services.