Transaction in Own Shares

TO:      Regulatory Information Service                                       
                                                                              
         PR Newswire                                                          
                                                                              
RE:      PARAGRAPH 12.6.4 OF THE LISTING RULES                                

Diageo plc - Transaction in Own Shares

Diageo plc ('the Company') announces that it sold 374,983 ordinary shares from
treasury on 2 October 2009 to Nomura International plc for cash, at a price
of 950 pence per share.

Following the above sale, the Company holds 252,831,552 ordinary shares as
treasury shares. The total number of ordinary shares in issue (excluding shares
held as treasury shares) is 2,501,087,557.

2 October 2009