The UK Statistics Authority (UKSA, Welsh: Awdurdod Ystadegau'r DU) is an independent body operating at arm's length from Government as a non-ministerial department, directly accountable to Parliament. It was established on 1 April 2008 by the Statistics and Registration Service Act 2007.
Formally, the UK Statistics Authority has two main functions: oversight of the Office for National Statistics (ONS), replacing the oversight role previously performed by HM Treasury ministers; and independent monitoring and assessment of official statistics, maintaining a Code of Practice for Official Statistics and accrediting Code-compliant statistics as 'National Statistics'. However, the chair can also act to comment on perceived misuse of official statistics by persons responsible or accountable for them. The assessment function has an operational role of producing reports on code compliance of specific sets of national statistics, and also a role making more strategic recommendations for the improvement of statistical outputs, in terms of both the presentation and coverage of official statistics as well as monitoring public trust in government statistics. Indeed, the original provisions had three roles listed: governance of ONS; assessment against and enforcement of a code of practice; and to report on the quality and comprehensiveness of Official statistics across government and non-departmental government bodies.
The UKSA has reported on the need to improve commentary supporting the release of official statistics, and the procedures and extent of pre-release access to official statistics by government ministers. The authority has also produced reports on the impact of cuts to specific statistical activity, such as the citizenship survey, especially where these changes affect users in other bodies. Other reports focus on statistics relating to a particular sector such as health and charities both of which have relevant data collected by more than one government body. A specific stream of work has been on user engagement, identifying the uses of official statistics and the extent to which the needs of users are taken into account by producers.