An immigration officer, whether or not in the United Kingdom, may give or refuse a person leave to enter the United Kingdom at any time before his departure for, or in the course of his journey to, the United Kingdom.

In order to determine whether or not to give leave to enter under this article (and, if so, for what period and subject to what conditions), an immigration officer may seek such information, and the production of such documents or copy documents, as an immigration officer would be entitled to obtain in an examination under paragraph 2 or 2A of Schedule 2 to the Act.

An immigration officer may also require the person seeking leave to supply an up to date medical report.

Failure by a person seeking leave to supply any information, documents, copy documents or medical report requested by an immigration officer under this article shall be a ground, in itself, for refusal of leave.