"13. We were asked by Mr Knowles on behalf of the respondent to deduct also the amount which she received by way of payment for holiday entitlement and Mr Knowles drew our attention to an authority namely Rushton v Harcross[1993] ICR 230 . However, we find on pursuing it that that authority simply states that credit must be given for any ex gratia or similar payment made by an employer and does not affect the proposition that no credit is to be given in respect of payments which are made in respect of a contractual obligation. Our finding is that the payment in respect of accrued holiday entitlement falls into that category."