The average numbers of staff employed by the Group during the year, which includes Directors, were:

	2020 Number	2019 Number
Manufacturing	615	591
Distribution	141	151
Administration	1,052	989
Total	1,808	1,731

The costs incurred in respect of these employees were:

	2020 £m	2019 £m
Wages and salaries	86.7	78.8
Social security costs	11.1	10.5
Other pension costs	4.7	4.5
Curtailment of defined benefit pension scheme (see note 23)	–	(3.5)
Share-based payments charge (see note 27)	1.5	2.4
Total	104.0	92.7

Related party transactions – the remuneration of key management was as follows:

	2020 £m	2019 £m
Short term employee benefits	5.5	5.7
Post-employment benefits	0.2	0.3
Share-based payments charge	0.7	1.4
	6.4	7.4

Key management comprises the Board and the Senior Executive Team. Details of the remuneration, shareholdings, share options, pension contributions and payments for loss of office of the Executive Directors are included in the Directors' Remuneration Report.

The Group operates a stakeholder personal pension scheme for certain employees and contributed between 4% and 14% of pensionable salaries. The Group also participates in state-run pension arrangements for certain employees in Dechra Veterinary Products SAS and Dechra Veterinary Products BV. Total pension contributions amounted to £4.7 million (2019: £4.5 million). Contributions to defined benefit pension schemes included in the above figures total £nil (2019: £0.3 million).