§ Mr. Graham
asked the Secretary of State for the Home Department how many patrials and how many non-patrials whose immigration status was fully lawful were (a) interrogated and (b) detained during the operation by the immigration service and police at the Main Gas factory in Edmonton on 20 June and for how long each of the latter was detained; what were the nationalities of the alleged immigrants about whom there was specific information leading to the operation; what were the nationalities of the persons interrogated and how they were selected from total employees present; how many police officers and how many members of the immigration service took part in the operation; what were the ranks of the most senior police and immigration officers present and whether police dogs were used.
§ Mr. Raison
In the operation on 20 June in Edmonton a total of 47 people who had been previously identified by name were questioned at the Main Gas factory and four were questioned in subsequent inquiries. Thirty-one people were arrested of whom three were subsequently released. The 31 people arrested comprised 25 Ghanaians, two Pakistanis, two Nigerians, one Jamaican and one citizen of the United Kingdom and Colonies. Of the three people arrested whose immigration status was found to be in order, one was a patrial who was detained for approximately four hours and two were non-patrials who were detained for approximately two and six hours each.
Seventy-nine police officers, of whom the most senior was a chief inspector, and 22 members of the immigration service, of whom the most senior was an assistant chief inspector, were present. Police dogs were taken to the factory but were not used.