By Neal Wallace
Passport checks were reduced at 28 of Europe's ports and airports as part of a pilot scheme, the home secretary has revealed.
Theresa May also said that more than ten million people entered the UK while the scheme was operating.
Labour has described the initiative as a "borders fiasco". Participating locations included Gatwick, Heathrow, Manchester Airport, Aberdeen, Calais, Coquelles and Cardiff.
In response to questions posed to her by MPs, Mrs May said that she had met with then-UK Border Force chief Brodie Clark during the months the pilot scheme was running (July to November), but the meeting had not been to discuss the operation.
Mr Clark has since resigned from his position and will be questioned by MPs this morning. His appearance will be followed by Rob Whiteman, chief executive of the UK Border Agency (UKBA).
Following Mr Clark's resignation, his union, the First Division Association, claimed that he had been treated with "contempt" by the home secretary.