Holding(s) in Company

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

Acertec Plc 

2. Reason for the notification (please tick the appropriate box or boxes):

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 are attached.

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

(CFD Positions now reportable)

Other (please specify):

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

Barclays PLC

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

Barclays Stockbrokers Ltd

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

01 June 2009

6. Date on which issuer notified:

02 June 2009

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

Below notifiable % to 5%

8. Notified details:

A: Voting rights attached to shares 

Class/type of shares

if possible using the 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

% of voting rights

Direct

Indirect

Direct

Indirect

GB00B0836H98

Not reportable 

Not reportable

2,734,572

0

2,734,572

0.00

5.33

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments 

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date 

Exercise/ Conversion period 

Number of voting rights instrument refers to

% of voting rights 

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

2,734,572

5.33%

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

Barclays Stockbrokers Ltd

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:

Geoff Smith

15. Contact telephone number:

020 7116 2913