AOR.L Regulatory News (AOR)

TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES

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

AorTech International Plc

2. Reason for the notification (please state 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 the notification obligation:

Rock Island Investments Limited

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

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

22 April - 26 April 2010

6. Date on which issuer notified:

26 April 2010

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

4%

8. Notified details:

A: Voting rights attached to shares:

Resulting situation after the triggering transaction

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

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

Resulting situation after the triggering transaction

Total (A+B+C)

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

N/A

Proxy Voting:

10. Name of the proxy holder:

N/A

11. Number of voting rights proxy holder will cease to hold:

N/A

12. Date on which proxy holder will cease to hold voting rights:

N/A

13. Additional information:

N/A

14. Contact name:

N/A

15. Contact number:

N/A

A: Identity of the persons or legal entity subject to the notification obligation

Full name:

Rock Island Investments Limited Contact address

Queensgate HouseSouth Church StreetPO Box 1234 Grand Cayman KY1-1108CAYMAN ISLANDS

Phone number & email:

0207 099 7262

Other useful information (at least legal representative for legal persons):

N/A