The average number of people employed by the Group (including Directors) during the year, analysed by category, was as follows:

Group
Number of employees
20172016
Office and management107109
Manufacturing318307
Sales182180
Distribution597589
1,2041,185

The aggregate payroll costs of these people were as follows:

Group
20172016
Wages and salaries (including bonus)30,87327,514
Share based payments1,5121,687
Social security costs2,8112,400
Contributions to defined contribution plans (see note 22)1,7951,613
36,99133,214