Holding(s) in Company

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

SDL 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

YES

Other (please specify):

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

Standard Life Investments Ltd

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

Vidacos Nominees

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

29 July 08

6. Date on which issuer notified:

30 July 2008

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

7%

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

ORD

GB0009376368

5,793,494

5,793,494

5,260,621

2,097,663

3,162,958

2.784%

4.197%

B: Financial Instruments

Resulting situation after the triggering transaction 

Type of financial instrument 

Expiration date 

Exercise/ Conversion Period/ Date 

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

% of voting rights

Total (A+B)

Number of voting rights

% of voting rights

5,260,621

6.981%

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 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:

14. Contact name:

Alastair Gordon

15. Contact telephone number:

01628 417241