Holding(s) in Company

For filings with the FSA include the annex

For filings with issuer exclude the annex

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuer

of existing shares to which voting rights are

attached: ii

Blinkx 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 thenotification obligation: iii

OppenheimerFunds, Inc.

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

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

June 01, 2012

6. Date on which issuer notified:

June 04, 2012

7. Threshold(s) that is/are crossed orreached: vi, vii

5% (increased to 5.19%)

8. Notified details:

Investor Relations

Blinkx PLC,

Third Floor,

47 - 50 Margaret Street,

London,

W1W 8SB

United Kingdom

A: Voting rights attached to shares viii, ix

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 x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB00B1WBW239

17,679,565

17,679,565

18,780,433

18,780,433

5.19%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

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

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

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

OppenheimerFunds, Inc. ("OFI") is a registered investment advisor with the U.S. SEC. Its ultimate parent company, Massachusetts Mutual Life Insurance Company, qualifies for disaggregation under FSA regulations. The shares of the issuer are held by investment accounts managed by OFI.

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will ceaseto hold:

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

13. Additional information:

14. Contact name:

Jake Burford, Manager Compliance,

OppenheimerFunds, Inc.

15. Contact telephone number:

001(303) 768-2826