SThree plc 09 February 2007 NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Name of company SThree plc 2. Name of shareholders having a major interest William Bottriell and Simon Arber 3. Please state whether notification indicates that it is in respect of holding of the shareholder named in 2 above or in respect of a non-beneficial interest or in the case of an individual holder if it is a holding of that person's spouse or children under the age of 18 As in 2 above 4. Name of the registered holder(s) and, if more than one holder, the number of shares held by each of them Name Global Custody Account EBT Account William Bottriell 14,030,518 shares 3,161,517 shares Simon Arber 10,468,758 shares 2,370,319 shares 5. Number of shares / amount of stock acquired N/A 6. Percentage of issued class N/A 7. Number of shares / amount of stock disposed Name Global Custody Account EBT Account William Bottriell 3,000,000 shares 1,111,019 shares Simon Arber 3,000,000 shares 7,211 shares 8. Percentage of issued class Name Global & EBT % total William Bottriell 2.98% Simon Arber 2.18% 9. Class of security Ordinary Shares of 1p 10. Date of transaction 7 and 8 February 2007 11. Date company informed 8 February 2007 12. Total holding following this notification Name Global Custody Account EBT Account William Bottriell 11,030,518 shares 2,050,498 shares Simon Arber 7,468,758 shares 2,363,108 shares 13. Total percentage holding of issued class following this notification Name Global & EBT % total William Bottriell 9.48% Simon Arber 7.12% 14. Any additional information Disposals from EBT Account relate to exercises of personal options granted prior to IPO. Percentages based on current issued share capital of 137,993,170 shares 15. Name of contact and telephone number for queries Steve Hornbuckle 020 7292 3838 16. Name and signature of authorised company official responsible for making this notification Steve Hornbuckle, Company Secretary, SThree Date of notification 9 February 2007 This information is provided by RNS The company news service from the London Stock Exchange