Holding(s) in Company

TR-1: Notifications of Major Interests in Shares

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

ProStrakan Group plc

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 

An event changing the breakdown of voting rights

Other (please specify):______________

3. Full name of person(s) subject to notification obligation:

3i Group plc (direct)

3i Investments plc (indirect)

4. Full name of shareholder(s) (if different from 3):

N/A

5. Date of transaction (and date on which the threshold is crossed or reached if different):

28/11/2008

6. Date on which issuer notified:

2/12/2008

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

6%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use ISIN code

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

Number of shares

Number of voting rights

Percentage of voting rights

Direct

Indirect

Direct

Indirect

GB00B09 STF21

12,156,515

12,156,515

11,901,620

11,901,620

See section 9 below

5.9142

See section 9 below

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date 

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

Total (A+B)

Number of voting rights

Percentage of voting rights

11,901,620

5.9142%

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

3i Group plc has a direct beneficial interest in the total number of voting rights disclosed in section 8 above.

3i Investments plc (a wholly owned subsidiary of 3i Group plc) has an indirect interest in the total number of voting rights disclosed in section 8 above in its capacity as the discretionary Investment Manager of 3i Group plc

3i Holdings plc and 3i plc are both wholly owned subsidiary undertakings of 3i Group plc and parent undertakings of 3i Investments plc

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:

Notification using total voting rights of 201,238,681

14 Contact name:

Jackie Harper

15. Contact telephone name:

020 7975 3530