Official Statistics: A report on the statistics being collected under the exit checks programme

By HM Government

This report provides the first introduction to the data collected on travellers departing and
arriving in the UK as part of the Home Office exit checks programme with a particular focus on
the requirements for statistical reporting rather than the operational use of the data.

Read more here:: https://www.gov.uk/government/statistics/a-report-on-the-statistics-being-collected-under-the-exit-checks-programme