The Prime Minister's Strategy Unit (often referred to simply as The Strategy Unit) was an elite unit based in the UK Cabinet Office between 2002 and 2010 (with its predecessor unit dating back to 1999). The Strategy Unit was established by the former Prime Minister Tony Blair, forming one part of a more streamlined centre of government along with a Delivery Unit (headed by Sir Michael Barber, focused on the delivery of public service targets), a Policy Unit (whose heads included David Miliband and Andrew Adonis, providing day-to-day policy advice) and a Communications Unit (headed by Alastair Campbell and later David Hill).