Ilika Plc Regulatory News (IKA)

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

Ilika plc

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

An acquisition or disposal of voting rights

X

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

Other (please specify):

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

Brookwell Limited

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

Nortrust Nominees Limited

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

24 February 2011

6. Date on which issuer notified:

24 February 2011

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

>5%

8. Notified details:

A: Voting rights attached to shares

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

ORD SHARES

GB00B608Z994

0

0

1,830,991

1,830,991

5.01%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate

Exercise/ConversionPeriod

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

n/a

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

Resulting situation after the triggering transaction

Type of financialinstrument

Exerciseprice

Expirationdate

Exercise/Conversionperiod

Number of votingrights instrumentrefers to

% of voting rights

n/a

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

1,830,991

5.01%

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

n/a

Proxy Voting:

10. Name of 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:

Progressive AIM Realisation Limited is Investment Manager to Brookwell Limited

14 Contact name:

Russell Scott

15. Contact telephone name:

020 7490 4355

Ilika plc

Graeme Purdy, Chief Executive

Steve Boydell, Finance Director

+44 (0) 23 80111400

Nomura Code Securities Limited

Phil Walker / Christopher Golden

+44 (0) 20 7776 1200

Pelham Bell Pottinger

Archie Berens / Olly Scott / Francesca Tuckett

+44 (0) 20 7861 3232