6. Crossing the border and leave to remain
Course-focused and comprehensive, the Textbook on series provides an accessible overview of the key areas on the law curriculum. This chapter is concerned with the legal processes of crossing the border to enter the UK and the stages at which that crossing is encountered before and on arrival. It discusses the extra-territorial powers of immigration officers and the role of new technologies as characteristics of an increasingly diffuse, intelligence-based, and security-oriented system. It describes the role and powers of entry clearance officers and immigration officers, including the power to discriminate, and considers the general grounds for refusal of leave or entry clearance. It presents a brief account of some offences which may be committed in the course of entry. Also discussed are the Common Travel Area (CTA), the grant of leave, and how the most secure immigration status of settlement may be achieved.