4Where a person becomes an employee of SNH in consequence of an offer made under paragraph 3(1) above, then, for the purposes of the [1978 c. 44.] Employment Protection (Consolidation) Act 1978, his period of employment with the Council or, as the case may be, the Commission shall count as a period of employment by SNH, and the change of employment shall not break the continuity of the period of employment.