The ACAS Arbitration Scheme (Great Britain) Order 2004

131.  On making an order for reinstatement, the arbitrator shall specify:

(i)any amount payable by the Employer in respect of any benefit which the Employee might reasonably be expected to have had but for the dismissal (including arrears of pay) for the period between the date of termination of employment and the date of reinstatement,

(ii)any rights and privileges (including seniority and pension rights) which must be restored to the Employee, and

(iii)the date by which the order must be complied with.