Notification of Interest

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

Wolfson Microelectronics PLC

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

An acquisition or disposal of voting rights 

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:

Barclays PLC

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

Barclays Bank PLC

Barclays Bank PLC

Barclays Global Investors Ltd

Barclays Life Assurance Co Ltd

Barclays Stockbrokers Ltd

Gerrard Investment Management Ltd

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

09 May 2008

6. Date on which issuer notified:

12 May 2008

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

6% 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 viii

Number of shares 

Number of voting rights ix

% of voting rights

Direct x

Indirect xi

Direct

Indirect

Ordinary Shares

GB0033563130

7,106,464

7,106,464

6,854,496

0

6,854,496

0.00

5.79

B: Financial Instruments

Resulting situation after the triggering transaction xii

Type of financial instrument 

Expiration date xiii

Exercise/ Conversion Period/ Date xiv 

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

6,854,496

5.79

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

Barclays Bank PLC

Barclays Bank PLC

Barclays Global Investors Ltd

Barclays Life Assurance Co Ltd

Barclays Stockbrokers Ltd

Gerrard Investment Management 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:

Geoff Smith

15. Contact telephone number:

020 7116 2913