Many records were burnt or destroyed on the night of the fire and, to the best of our knowledge, the following figures are correct. Of the 23 escapees 16 have been relocated. Of these, nine have been removed, four re-detained (three of whom were subsequently released), one reported to Croydon enforcement unit voluntarily and was released and two were granted temporary release. The whereabouts of seven remain unknown. Decisions on the 16 were made in line with the casework criteria as it applies to their individual circumstances.
Following withdrawal of the control for passengers travelling to continental destinations from ferry ports and small/medium-sized airports by the Government in 1994, the UK has had a diminished ability to record exit movements, and so such calculations are problematic.
The e-Borders programme will soon use biometric data to record passenger movements at UK ports.