image of MOD logo

UK Defence Statistics Compendium

UK Defence Statistics (UKDS) is the annual statistics compendium of the Ministry of Defence.

Until 2012, UKDS was published annually as a single publication, with many of the statistics being published for the first time in UKDS. Following the recommendations given by the UK Statistics Authority in their assessment, and discussions with internal and external users at the National and Official Statistics User Consultation Meetings in May 2013, a number of format changes have been implemented.

From 2013, UKDS no longer contains any new statistics. The statistics previously published in UKDS have been separated and released in individual statistical bulletins in six series. This is to allow information on various topics to be published as soon as the data is available, rather than waiting for all the other chapters to be completed, as was the case with previous editions of UKDS. For more information on where the statistics previously released in UKDS are now published, please see the documents in the 2013 section below.

From 2013, UKDS now provides highlights from previously published statistical releases on a number of Defence-related areas, including: finance and economics; personnel numbers; health of the Armed Forces; equipment; search and rescue; surveys of personnel; land holdings; and service family accommodation.

UKDS was first published in 1992, and replaced Statement on the Defence Estimates Volume 2.

Revisions to Historic Data from the Joint Personnel Administration System
Defence Statistics has undertaken a major review of all Armed Forces personnel data from the Joint Personnel Administration System. Some figures for the period 1 April 2006 to 1 April 2009 have been revised. This has resulted in changes to the strengths, intake and outflow data reported in older UKDS (Tables 2.1 - 2.22), affecting the following periods:

  • Naval Service - flow statistics from the period ending 1st April 2009 to the period ending 30 September 2011, and strength statistics from 1 May 2009 to 1 October 2011 (inclusive);
  • Army - flow statistics from the period ending 1st April 2009 to the period ending 30 September 2011, and strength statistics from 1 May 2009 to 1 October 2011 (inclusive);
  • Royal Air Force - flow statistics from the period ending 1st April 2009 to the period ending 30 September 2011, and strength statistics from 1 May 2009 to 1 October 2011 (inclusive).

The revised data are considered finalised and are therefore no longer marked provisional. Data for 1 November 2011 and subsequent dates are considered final. Please refer to UKDS 2011 and later for the latest figures.