The following provisions of this Act do not apply to employment where under his contract of employment an employee ordinarily works, or in the case of a prospective employee would ordinarily work, outside Great Britain—
Sections 145A to 151 do not apply to employment where under his contract personally to do work or perform services a worker who is not an employee ordinarily works outside Great Britain.
For the purposes of subsection (1) as it relates to sections 193 to 194, employment on board a ship registered in the United Kingdom or a GB-linked ship shall be treated as employment where under his contract a person ordinarily works in Great Britain.
For the other purposes of subsection (1) and the purposes of subsection (1A) employment on board a ship registered in the United Kingdom shall be treated as employment where under his contract a person ordinarily works in Great Britain unless—
In this section, "GB-linked ship" means a ship providing a service—
A service is within this subsection if it is operated between a place in Great Britain and another place in the United Kingdom.
A service is within this subsection if—
But a service is not within subsection (5) if the service—
In this section—
"harbour" has the same meaning as in the Harbours Act 1964;
"ship" has the same meaning as in section 193A (see subsection (4) of that section).