"Due to the temporary nature of the assignment, you will remain on the UK payroll. Your basic salary will be uplifted by 50% during the assignment for all days spent overseas, including days of travel.
"The Company shall employ the Employee and the Employee shall serve the Company (or such subsidiary or allied Company as the Company shall from time to time direct or) as a
"The Employee shall proceed to the zone of operations as and when directed by the Company in writing."
"Unless this Agreement is cancelled ... it shall continue in force for a period of TWENTY-FOUR months excluding leave periods from the Employee's arrival in the zone of operations except where such period is extended by mutual agreement in writing."
"The Company shall from the date of his arrival in the zone of operations pay the Employee during the continuance of his employment (provided the Employee shall duly perform and observe the provisions herein contained and on his part to be performed and observed) a salary at the rate of
"This Agreement shall supersede any previous contract of employment between the Company or any other subsidiary or Associated Company in the Costain Group and the Employee in force at the date hereof."
"(1) The Industrial Tribunal only considered the contract of employment which was in force at the time of my dismissal. Throughout my employment in the Costain Group my continuity of employment was unbroken as I transferred from one branch to another. The Industrial Tribunal should have considered the whole of my employment in the Group: Janata Bank v Ahmed[1981] ICR 791 . Had they done so they would have concluded that, apart from my posting to Abu Dhabi, I was employed in England.
" The consecutive posting situation has, of course, to be distinguished from the case where an employee is appointed to a new position, involving a significant variation in his contract of employment, as a result of which he is required to work in one particular country unless and until that contract is further varied. In such a case that will be the place and the only place at which he ordinarily works under his contract of employment."