Paragraph 53
(1)
The tonnage tax activities of a tonnage tax company are treated for corporation tax purposes as a separate trade (the company’s “tonnage tax trade”) distinct from all other activities carried on by the company.
(2)
Sub-paragraph (1) shall not be read as requiring a company to be treated—
(a)
as setting up and commencing a new trade on entry into tonnage tax, or
(b)
as permanently ceasing to carry on a trade on leaving tonnage tax.