The monthly Standardised Unemployment Rates (SURs) published by the CSO are routinely updated to take account of the following:
1. The preliminary results of the most recent annual Labour Force Survey (LFS) based on respondents' own assessment of their Principal Economic Status (i.e. at work, unemployment, etc.) which are issued annually in October.
2. The detailed final results of the LFS, which classify persons employed and unemployed on the internationally comparable basis recommended by the ILO.
3. The six-monthly updating of the seasonal adjustment of the Live Register.