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 Statistics3 continues to be complied with in relation to official statistics already designated as National Statistics. The report covers the sets of statistics related to the UK’s Annual and Quarterly National Accounts, produced by the Office for National Statistics (ONS) and reported in:

• Second Estimate of GDP (M2:GDP)

• Quarterly National Accounts (QNA)

• United Kingdom Economic Accounts (UKEA)

• United Kingdom National Accounts – the Blue Book (Blue Book)

This report forms part of a broader assessment of the Annual and Quarterly National Accounts produced by ONS. Assessment report 300 examines the statistics in Supply and Use Tables and Input-Output Tables.

The previous assessment of all these statistics was reported in Assessment report 100 , published in March 2011. These statistics have been re-assessed because they are amongst the UK’s most prominent macro-economic statistics and have been the subject of significant changes since the previous assessment.

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 of confirmation as National Statistics