Official statistics announcement

Longitudinal Study 2011 to 2021: Completeness of census linkage

A summary of the quality of the linkage of Census 2021 to the ONS Longitudinal Study (LS). Quality measures include tracing rates, sampling fractions and forwards and backwards linkage rates.

• From: Office for National Statistics
• Published: 21 May 2026
• Last updated: 30 June 2026

• Release date: 7 July 2026 9:30am (confirmed)

These statistics will be released on 7 July 2026 9:30am