TP ICAP Regulatory News (TCAP)

11 Jun 2010 14:29

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 Tullett Prebon PLC attached:ii 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): OppenheimerFunds, Inc ("OFI") 3. Full name of person(s) subject to the notification obligation:iii Baring Asset Management Limited ("BAM") 4. Full name of shareholder(s) (if different from 3.):iv 5. Date of the transaction and date on which the threshold is crossed or 9, June 2010 reached: v 6. Date on which issuer notified: 10 June, 2010

7. Threshold(s) that is/are crossed or 4% (OFI independently fell below the 4% reached: vi, vii

threshold to 3.9116%) 8. Notified details: Tullett Prebon Plc, Level 3, 155 Bishopsgate, London EC2M 3TQ Nicola Challen, nchallen@tullettprebon.com Averil Patel, apatel@tullettprebon.com A: Voting rights attached to shares viii, ix Class/type Situation previous Resulting situation after the triggering of to the triggering transaction shares transaction Number Number Number Number of voting % of voting if possible of of of shares rights rights x using Shares Voting the ISIN Rights Direct Direct xi Indirect Direct Indirect CODE xii 8,775,797 8,775,797 8,422,197 3.9116% (OFI) (OFI) (OFI) (OFI) GB00B1H0DZ51 242,237 242,237(BAM) 242,237 0.1125% (BAM) (BAM) (BAM) 9,018,034 9,018,034 (Total) 8,664,434 4.0241% (Total) (Total) (Total) B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ Number of voting % of voting financial date xiii Conversion Period xiv rights that may be rights instrument acquired if the instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi Resulting situation after the triggering transaction Type of Exercise Expiration Exercise/ Number of voting rights % of voting financial price date xvii Conversion instrument refers to rights xix, xx instrument period xviii Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 8,422,197 (OFI) 3.9116% (OFI) 242,237 (BAM) 0.1125% (BAM) 8,664,434 (Total) 4.0241% (Total)

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

The percentage of holdings noted above is based on the total outstanding shares of 215,313,584

Massachusetts Mutual Life Insurance Company is the parent company of Baring Asset Management ("BAM") and OppenheimerFunds, Inc. ("OFI"). Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: 14. Contact name: Rose Baker, Massachusetts Mutual Life Insurance Company

15. Contact telephone number: 001(413)744-8258