CONTEST is the United Kingdom's counter-terrorism strategy. It was first developed by Sir David Omand and the Home Office in early 2003 as the immediate response to 9/11, and a revised version was made public in 2006. Further revisions were published on 24 March 2009, 11 July 2011 and June 2018. An Annual Report on the implementation of CONTEST was released in March 2010 and in April 2014. The aim of the strategy is "to reduce the risk to the UK and its interests overseas from terrorism so that people can go about their lives freely and with confidence." The success of this strategy is not linked to total elimination of the terrorist threat, but to reducing the threat sufficiently to allow the citizens a normal life free from fear.
CONTEST is composed of the 'four Ps' - Prevent, Pursue, Protect, and Prepare - which aim to reduce terrorism at all levels through: Preventing more people from being radicalised; Pursuing suspects operationally and legally; Protecting the public through security measures, and Preparing to manage the response to mitigate the impact of an inevitable attack.