12 Employee and key management personnel costs

12a Employee numbers

	2011		2010
The average monthly number of employees during the year was:
Environmental Technologies	5,313		4,701
Precious Metal Products	2,657		2,562
Fine Chemicals	1,052		975
Corporate and Central Research	366		337
Average number of employees	9,388		8,575
Actual number of employees at 31st March	9,742		8,949

The number of temporary employees included above at 31st March 2011 was 237 (2010 254).

The actual number of staff was:

	At 31st March 2011						At 31st March 2010
	Actual employees		Agency staff		Total headcount		Actual employees		Agency staff		Total headcount
Environmental Technologies	5,569		654		6,223		4,985		492		5,477
Precious Metal Products	2,711		88		2,799		2,594		39		2,633
Fine Chemicals	1,089		35		1,124		1,026		11		1,037
Corporate and Central Research	373		6		379		344		4		348
Total	9,742		783		10,525		8,949		546		9,495

12b Employee benefits expense

	2011 £ million		2010 £ million
Wages and salaries	371.2		332.3
Social security costs	36.4		31.4
Pension and other post-employment costs	34.3		29.8
Share-based payments	17.1		10.4
Total employee benefits expense	459.0		403.9

Termination benefits of £33.3 million (2010 £2.0 million) are not included above.

12c Key management personnel

The key management of the group and parent company consist of the Board of Directors and the members of the Chief Executive’s Committee (CEC). During the year ended 31st March 2011 the CEC had twelve members (2010 ten members). Their compensation charged in the year was:

	2011 £ million		2010 £ million
Short term employee benefits	6.8		7.4
Pension and other post-employment costs	0.6		0.5
Share-based payments	2.9		1.5
Non-executive directors’ fees and benefits	0.6		0.5
Total compensation of key management personnel	10.9		9.9

Termination benefits not included above were £ nil (2010 £0.8 million). Other than the compensation above there were no transactions with any key management personnel. There were no balances outstanding at the year end.

Information on the directors’ remuneration is given in the Remuneration Report.