SThree plc 07 August 2006 NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Name of company SThree plc 2. Name of shareholder having a major interest Simon Peter 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 2 above 4. Name of the registered holder(s) and, if more than one holder, the number of shares held by each of them Simon Peter Arber 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 210,380 8. Percentage of issued class N/A 9. Class of security Ordinary Shares of 1p 10. Date of transaction N/A 11. Date company informed 4 August 2006 12. Total holding following this notification 15,035,194 13. Total percentage holding of issued class following this notification 10.90 14. Any additional information The shares were disposed of as a result of the exercise of personal options granted by Simon Arber prior to IPO. 15. Name of contact and telephone number for queries Ian Colletts 020 7292 3838 16. Name and signature of authorised company official responsible for making this notification Ian Colletts, Company Secretary, SThree Date of notification 7 August 2006 This information is provided by RNS The company news service from the London Stock Exchange