The average monthly number of employees (including Executive Directors) was:
| 2012
Number | 2011
Number |
|---|
| ADE: | | |
| Western Europe | 1,025 | 1,010 |
| North America | 1,087 | 939 |
| Emerging Markets | 14 | 12 |
| AGI: | | |
| Western Europe | 2,012 | 2,075 |
| North America | 622 | 497 |
| Emerging Markets | 867 | 897 |
| Shared services | 78 | 70 |
| Head office | 30 | 33 |
| 5,735 | 5,533 |
Their aggregate remuneration comprised:
| 2012
£m | 2011
£m |
|---|
| Wages and salaries | 193.7 | 189.1 |
| Social security costs | 29.0 | 33.8 |
| Other pension costs | 6.1 | 5.6 |
| 228.8 | 228.5 |
Disclosure of individual director's remuneration, share interests, share options, long term incentive schemes, pension contributions and pension entitlements required by the Companies Act 2006 and those specified for audit by the Listing Rules of the Financial Services Authority are shown in the tables in the Board Report on Remuneration and form part of these financial statements.