Transaction in Own Shares

TO:      Regulatory Information Service                                        
                                                                               
         PR Newswire                                                           
                                                                               
RE:      PARAGRAPH 3.1.4 OF THE DISCLOSURE AND TRANSPARENCY RULES              

The notifications listed below were all received under Paragraph 3.1.2 of the
Disclosure and Transparency Rules.

Diageo plc (the "Company") announces that:

 1. it received notification on 10 March 2008 of the following allocations of
    ordinary shares of 28 101/108 pence each in the Company ("Ordinary Shares")
    under the Diageo Share Incentive Plan (the "Plan"), namely:
   
(i) the following directors of the Company were allocated Ordinary Shares on 10
March 2008 under the Plan, by Diageo Share Ownership Trustees Limited (the
"Trustee"):

Name of Director              Number of Ordinary Shares               
                                                                      
N C Rose                      18                                      
                                                                      
P S Walsh                     18                                      

(ii) the following "Persons Discharging Managerial Responsibilities" ("PDMR")
were allocated Ordinary Shares on 10 March 2008 under the Plan, by the Trustee:

Name of PDMR                  Number of Ordinary Shares               
                                                                      
S Fletcher                    18                                      
                                                                      
J Grover                      18                                      
                                                                      
A Morgan                      18                                      
                                                                      
G Williams                    18                                      

The number of Ordinary Shares allocated comprises those purchased on behalf of
the employee using an amount which the employee has chosen to have deducted
from salary ("Sharepurchase") and those awarded to the employee by the Company
("Sharematch") on the basis of one Sharematch Ordinary Share for every two
Sharepurchase Ordinary Shares.

The Sharepurchase Ordinary Shares were purchased and the Sharematch Ordinary
Shares were awarded at a price per share of £9.92.

The Ordinary Shares are held by the Trustee and in the name of the Trustee.
Sharepurchase Ordinary Shares can normally be sold at any time. Sharematch
Ordinary Shares cannot normally be disposed of for a period of three years
after the award date.

As a result of the above transactions, interests of directors and PDMRs in the
Company's Ordinary Shares (excluding options, awards under the Company's LTIPs
and interests as potential beneficiaries of the Company's Employee Benefit
Trusts) are as follows:

Name of Director             Number of Ordinary Shares               
                                                                     
N C Rose                     398,624                                 
                                                                     
P S Walsh                    673,278                                 
                                                                     
Name of PDMR                 Number of Ordinary Shares               
                                                                     
S Fletcher                   135,429                                 
                                                                     
J Grover                     182,681                                 
                                                                     
A Morgan                     150,774                                 
                                                                     
G Williams                   226,562 (of which 5,760 are held in the 
                             form of ADS*)                           

2. it received notification on 10 March 2008 from Lord Blyth, a director of the
Company, that he has purchased 1,052 Ordinary Shares on 10 March 2008 under an
arrangement with the Company, whereby he has agreed to use an amount of £10,500
each month, net of tax, from his director's fees to purchase Ordinary Shares.
Lord Blyth has agreed to retain the Ordinary Shares while he remains a director
of the Company.

The Ordinary Shares were purchased at a price per share of £9.92.

As a result of this purchase, Lord Blyth's interest in Ordinary Shares has
increased to 156,195.

3. it received notification on 10 March 2008 from Todd Stitzer, a director of
the Company, that he has purchased 100 Ordinary Shares on 10 March 2008 under
an arrangement with the Company, whereby he has agreed to use an amount of £
1,000 each month, net of tax, from his director's fees to purchase Ordinary
Shares.

The Ordinary Shares were purchased at a price per share of £9.92.

As a result of this purchase, Mr Stitzer's interest in Ordinary Shares has
increased to 5,065.

10 March 2008

*1 ADS is the equivalent of 4 Ordinary Shares.