(1) Where a person requiring leave to enter the United Kingdom arrives in the United Kingdom by ship or aircraft and, on being required to do so by an immigration officer, fails to produce—
(a) either a valid passport with photograph or some other document satisfactorily establishing his identity and nationality or citizenship; and
(b) if he is a person who under the immigration rules requires a visa for entry into the United Kingdom, or by virtue of section 1A below requires a visa for passing through the United Kingdom, a visa valid for the purpose of entering or (as the case may be) passing through the United Kingdom, ,
the owners or agents of the ship or aircraft shall, in respect of that person, be liable to pay the Secretary of State on demand the sum of £1,000 or such other sum as may be prescribed.
(2) No liability shall be incurred under subsection (1) above in respect of any person who is shown by the owners or agents to have produced to them or an employee of theirs the document or documents specified in that subsection when embarking on the ship or aircraft for the voyage or flight to the United Kingdom.
(3) In subsection (1) above “ prescribed ” means prescribed by an order made by the Secretary of State by statutory instrument subject to annulment in pursuance of a resolution of either House of Parliament.
(4) For the purposes of this section a document shall be regarded as being what it purports to be unless its falsity is reasonably apparent.
(5) Any sums received by the Secretary of State under this section shall be paid into the Consolidated Fund.