NOTIFICATION OF MAJOR INTEREST IN SHARES Lonmin Plc (Incorporated in England and Wales) (Registered in the Republic of South Africa under registration number 1969/000015/10) JSE code: LON Issuer Code: LOLMI & ISIN : GB0031192486 ("Lonmin") 6 December 2012 TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights LONMIN PLC are attached: 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: INVESTEC ASSET MANAGEMENT (PTY) LIMITED 4. Full name of shareholder(s) (if different from 3.): 5. Date of the transaction and date on which the threshold is crossed or reached: 03.12.12 6. Date on which issuer notified: 05.12.12 7. Threshold(s) that is/are crossed or reached: 5% 8. Notified details: A: Voting rights attached to shares Class/type of Situation previous Resulting situation after the triggering transaction shares to the triggering transaction if possible using Number Number Number Number of voting % of voting rights the ISIN CODE of of of rights Shares Voting shares Rights Direct Direct Indirect Direct Indirect Ordinary USD01 10,015,098 10,427,028 - - 10,427,028 5.13% GB0031192486 B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of financial Expiratio Exercise/ Number of voting % of voting instrument n Conversion rights that may be rights date Period acquired if the instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Exercise Expiration Exercise/ Number of voting % of voting financial price date Conversion rights instrument rights instrument period refers to Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 10,427,028 5.13% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: 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: SEEMA KAMBOJ 15. Contact telephone number: 020 7201 6053 Date: 06/12/2012 05:26:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE'). The JSE does not, whether expressly, tacitly or implicitly, represent, warrant or in any way guarantee the truth, accuracy or completeness of the information published on SENS. The JSE, their officers, employees and agents accept no liability for (or in respect of) any direct, indirect, incidental or consequential loss or damage of any kind or nature, howsoever arising, from the use of SENS or the use of, or reliance on, information disseminated through SENS.