11. In schedule 2 (persons not required to comply with regulation 3, regulation 5A or regulations 5D to 6B) after paragraph 4D insert—
“4DA. For the purposes of paragraphs 4B, 4C and 4D, as they apply to categories of persons who have travelled to the United Kingdom in the course of their work, this is to be construed as excluding persons who—
(a)arrive by air,
(b)are returning to the United Kingdom for a period of contracted leave, and
(c)are not under contract to work in the common travel area during the period during which they would, but for paragraphs 4B, 4C or 4D as applicable, have had to comply with regulation 6(2) or 6B(2).”.