Notification of Interest

SThree plc
14 November 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 shares already issued to which voting rights are attached      no 

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        13 November 2007
threshold is crossed or reached if different):

6:       Date on which issuer notified:                    14 November 2007

7:       Threshold(s) that is/are crossed or reached:      12%



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

15,417,468                                           15,417,468

Resulting situation after the triggering transaction

Number of shares           Number of voting rights                              Percentage of
                                                                                voting rights
                           Direct                    Indirect                   Direct        Indirect

16,783,800                 9,418,541                 7,365,259                  6.802%        5.319%


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

16,783,800                                           12.120%



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:             [phone]




                      This information is provided by RNS
            The company news service from the London Stock Exchange