"(1) Subject to the provisions of these Regulations, these Regulations apply to a transfer from one person to another of an undertaking situated immediately before the transfer in the United Kingdom or a part of one which is so situated.
"(1) A relevant transfer shall not operate so as to terminate the contract of employment of any person employed by the transferor in the undertaking or part transferred but any such contract which would otherwise have been terminated by the transfer shall have effect after the transfer as if originally made between the person so employed and the transferee.
"(1) Where either before or after a relevant transfer, any employee of the transferor or transferee is dismissed, that employee shall be treated for the purposes of Part V of the 1978 Act and Articles 20 to 41 of the 1976 Order (Unfair Dismissal) as unfairly dismissed if the transfer or a reason connected with it is the reason or principal reason for his dismissal."
"Where an economic, technical or organisational reason entailing changes in the workforce of either the transferor or the transferee before or after a relevant transfer is the reason or principal reason for dismissing an employee - (a) paragraph (1) above shall not apply to his dismissal; but (b) without prejudice to the application of section 57(3) of the 1978 Act or Article 22(10) of the 1976 Order (test of fair dismissal), the dismissal shall for the purposes of section 57(1)(b) of that Act and Article 22(1)(b) of that Order (substantial reason for dismissal) be regarded as having been for a substantial reason of a kind such as to justify the dismissal of an employee holding the position which that employee held."