Holding(s) in Company

+-----------------------------------------------------------+
| TR-1:          Notifications of Major Interests in Shares |
+-----------------------------------------------------------+

+-------------------------------------------------------------------+----------+
|1:     Identity of the issuer or the underlying issuer of existing |SThree PLC|
|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 qualifying financial instruments which may  |   |
|result in the acquisition of shares already issued to which voting rights |no |
|are attached                                                              |   |
+--------------------------------------------------------------------------+---+
|An acquisition or disposal of instruments with similar economic effect to |no |
|qualifying financial instruments                                          |   |
+--------------------------------------------------------------------------+---+
|An event changing the breakdown of voting rights                          |no |
+-----------------------+--------------------------------------------------+---+
|Other (please specify):|                                                  |no |
+-----------------------+--------------------------------------------------+---+
                        |                                                  |

+-----------------------------------------------+------------------------------+
|3. Full name of person(s) subject to the       |                              |
|notification                                   | Standard Life Investments Ltd|
|    obligation:                                |                              |
+-----------------------------------------------+------------------------------+
|4. Full name of shareholder(s) (if different   | Vidacos Nominees             |
|from 3.):                                      |                              |
+-----------------------------------------------+------------------------------+
|5. Date of the transaction (and date on which  |                              |
|the threshold                                  |20 January 2010               |
|      is crossed or reached):                  |                              |
+-----------------------------------------------+------------------------------+
|6. Date on which issuer notified:              |21 January 2010               |
+-----------------------------------------------+------------------------------+
|7. Threshold(s) that is/are crossed or reached:|9%                            |
+-----------------------------------------------+------------------------------+












+----------------------------------------------------------------------+
|8:    Notified Details                                                |
+----------------------------------------------------------------------+
|A:    Voting rights attached to shares                                |
+--------------------------------------------+-------------------------+
|Class/type of share  If possible use ISIN   |GB00B0KM9T71             |
|code                                        |                         |
+--------------------------------------------+-------------------------+
|                                                                      |
+----------------------------------------------------------------------+
|Situation previous to the triggering transaction                      |
+--------------------------------------------+-------------------------+
|Number of shares                            |Number of voting rights  |
+--------------------------------------------+-------------------------+
|11,099,245                                  |11,099,245               |
+--------------------------------------------+-------------------------+
|                                                                      |
+----------------------------------------------------------------------+
|Resulting situation after the triggering transaction                  |
+----------------+-------------------------------------+---------------+
|Number of shares|Number of voting rights              |Percentage of  |
|                |                                     |voting rights  |
|                +---------------------------+---------+------+--------+
|                |Direct                     |Indirect |Direct|Indirect|
+----------------+---------------------------+---------+------+--------+
|10,747,159      |3,270,143                  |7,477,016|2.686%|6.141%  |
+----------------+---------------------------+---------+------+--------+

+------------------------------------------------------------------------------+
|B:    Qualifying Financial Instruments                                        |
+------------------------------------------------------------------------------+
|Resulting situation after the triggering transaction                          |
+-------------+-------------+--------------+----------------------+------------+
|Type of      |Expiration   |Exercise/     |No. of voting rights  |Percentage  |
|financial    |date         |conversion    |that may be acquired  |of voting   |
|instrument   |             |period/date   |(if the instrument    |rights      |
|             |             |              |exercised/converted)  |            |
+-------------+-------------+--------------+----------------------+------------+
|             |             |              |                      |            |
+-------------+-------------+--------------+----------------------+------------+

+------------------------------------------------------------------------------+
|C: Financial Instruments with similar economic effect to Qualifying Financial |
|Instruments                                                                   |
+------------------------------------------------------------------------------+
|Resulting situation after the triggering transaction                          |
|                                                                              |
|                                                                              |
+---------------+--------+----------+----------+--------------+----------------+
|Type of        |Exercise|Expiration|Exercise/ |Number of     |% of voting     |
|financial      |price   |date      |Conversion|voting        |rights          |
|instrument     |        |          |period    |rights        |                |
|               |        |          |          |instrument    |                |
|               |        |          |          |refers to     |                |
+---------------+--------+----------+----------+--------------+-------+--------+
|               |        |          |          |              |Nominal| Delta  |
|               |        |          |          |              +-------+--------+
|               |        |          |          |              |       |        |
+---------------+--------+----------+----------+--------------+-------+--------+

+-------------------------------------------------------+
| Total (A+B+C)                                         |
+-------------------------+-----------------------------+
| Number of voting rights | Percentage of voting rights |
+-------------------------+-----------------------------+
|  10,747,159             | 8.827%                      |
+-------------------------+-----------------------------+




+------------------------------------------------------------------------------+
|9. Chain of controlled undertakings through which the voting rights and/or the|
|financial instruments are effectively held, if applicable:                    |
+------------------------------------------------------------------------------+
|                                                                              |
|                                                                              |

+----------------------------------------------------------------------+
| Proxy Voting:                                                        |
|                                                                      |
+------------------------------------------------------------------+---+
| 10. Name of the 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:             | [e-mail] |
|                               | Standard Life Investments Ltd   |
+-------------------------------+---------------------------------+
| 15. Contact telephone number: | [phone]                 |
|                               |                                 |
+-------------------------------+---------------------------------+





















[HUG#1375662]