This is one of a series of reports prepared under the provisions of the Statistics and Registration Service Act 2007. The Act gives the Statistics Authority power to re-assess whether the Code of Practice for Official Statistics continues to be complied with in relation to official statistics already designated as National Statistics. The report covers the following population estimates and projections (population) statistics produced by the Welsh Government for Wales and reported in:

• Mid-year Estimates of the Population (Mid-year Estimates)

• Principal and Variant Local Authority Population Projections for Wales (Local Authority Projections)

• Population Projections for National Parks (National Park Projections)

This report forms part of a broader assessment of sets of population statistics across the UK that are produced by the Office for National Statistics (ONS); the Welsh Government; National Records of Scotland (NRS) and the Northern Ireland Statistics and Research Agency (NISRA). Assessment reports 309, 311 and 312 examine the population statistics produced by ONS, NRS and NISRA respectively.

The previous assessment of these sets of statistics was included in Assessment report 101 . They are among the UK’s most prominent National Statistics and are being re-assessed because they are an important input to national and local planning activity and to a large number of economic and social statistics.

This report was prepared by the Authority’s Assessment team, and approved by the Regulation Committee on behalf of the Board of the Statistics Authority, based on the advice of the Director General for Regulation.

Letter to Glyn Jones regarding population estimates

Monitoring Review – Population estimates and projections a comparison across the UK

Letter of confirmation as National Statistics