203. Variation of leave for crew members.

A person who has been given leave to enter1 the United Kingdom2 to join a ship, aircraft, hovercraft, hydrofoil or international train service as a member of its crew, or a crew member who has been given leave to enter for hospital treatment, repatriation or transfer to another ship, aircraft, hovercraft, hydrofoil or international train service in the United Kingdom, must be refused leave to remain unless an extension of stay is necessary to fulfil the purpose for which he was given leave to enter or unless he meets the requirements3 for an extension of stay as a spouse