SThree plc
16 October 2007


TR-1:          Notifications of Major Interests in Shares


1:       Identity of the issuer or the underlying issuer   SThree PLC
of existing shares to which voting rights are attached:

2:       Reason for notification (yes/no)
An acquisition or disposal of voting rights                                                    yes
An acquisition or disposal of financial instruments which may result in the acquisition of     no
shares already issued to which voting rights are attached
An event changing the breakdown of voting rights                                               no
Other (please specify):                                                                        no

3:       Full name of person(s) subject to notification    Standard Life Investments Ltd
obligation:

4:       Full name of shareholder(s) (if different from    Vidacos Nominees

3):

5:       Date of transaction (and date on which the        5 October 2007
threshold is crossed or reached if different):
6:       Date on which issuer notified:                    15 October 2007
7:       Threshold(s) that is/are crossed or reached:      10%


8:       Notified Details
A:      Voting rights attached to shares

Class/type of share  If possible use ISIN code       GB00B0KM9T71

Situation previous to the triggering transaction

Number of shares                                     Number of voting rights
13,646,591                                           13,646,591

Resulting situation after the triggering transaction

Number of shares           Number of voting rights                              Percentage of
                                                                                voting rights
                           Direct                    Indirect                   Direct        Indirect
14,031,281                 12,080,758                1,950,523                  8.724%        1.409%

B:     Financial Instruments

Resulting situation after the triggering transaction

Type of financial     Expiration date      Exercise/ conversion  No. of voting rights  Percentage of voting
instrument                                 period/date           that may be acquired  rights
                                                                 (if the instrument
                                                                 exercised/converted)


Total (A+B)

Number of voting rights                              Percentage of voting rights
14,031,281                                           10.133%


9:       Chain of controlled undertakings through which the voting rights and /or the financial instruments
are effectively held, if applicable:
Standard Life Investments Ltd

Proxy Voting:

10:  Name of proxy holder:
11:  Number of voting rights proxy holder will
cease to hold:
12:  Date on which proxy holder will cease to hold
voting rights:

13:  Additional information:
14:  Contact name:                         Alison Kennedy
                                           Corporate Governance Manager-Engagement
                                           Standard Life Investments Ltd
15:  Contact telephone number:             (0131) 245 2289




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