Powers at ports
3.Sections 1-4 provide for the Secretary of State to designate immigration officers acting at ports in England and Wales and Northern Ireland to have the power to detain an individual pending the arrival of a police constable and create offences of absconding from detention, and assaulting or obstructing an immigration officer in the course of exercising this power and the punishments associated with each. The meaning of “port” for these purposes is also defined.