Holding(s) in Company

Diploma PLC
18 January 2007

Letter to Diploma Plc
Dated 17 January, 2007



Companies Act 1985 ('The Act') - Part VI 

I hereby inform you that as at 16-January-2007, Barclays PLC, through the legal 
entities listed on the attached schedule, has a notifiable interest in the 
capital of your Company of 13.64%
 
Details of this interest, together with a breakdown between registered holders 
(as required by Section 202(3) of the Act), are enclosed:
 
The issued capital of 22,647,911 is the latest figure available to us. 
 


From
Geoff Smith 
Barclays Compliance


                              LEGAL ENTITY  REPORT 

DIPLOMA                                                           SEDOL: 0182663
 
 
As at 16 January 2007 Barclays PLC through the legal entities listed below, 
had a notifiable interest in 3,088,736 ORD GBP0.05 representing 13.64% of the 
issued share capital of 22,647,911 units.
 
Legal Entity                              Holding                Percentage Held
 
Barclays Global Investors Ltd             706,632                         3.1201 
Barclays Capital Securities Ltd           218,074                          .9629 
Barclays Bank PLC                          20,200                          .0892 
Barclays Global Investors Ltd           1,850,966                         8.1728 
Barclays Life Assurance Co Ltd            273,614                         1.2081
Gerrard Ltd                                19,250                          .0850 

                       Group Holding    3,088,736                        13.6381




 

                              REGISTERED HOLDERS REPORT 


DIPLOMA                                                           SEDOL: 0182663
 
As at 16 January 2007 Barclays PLC, through the registered holders listed 
below, had a notifiable interest in 3,088,736 ORD GBP0.05 representing 13.64% 
of the issued share capital of 22,647,911 units. 

Registered Holder                           Account Designation          Holding
 
BANK OF IRELAND                                                          112,620 
BANK OF NEW YORK                                                          70,395 
BANK OF NEW YORK - NY - RECON ONLY                                        34,574 
Bank of Ireland Nominees Limited            CREST ID. 11X13               20,200 
Barclays Capital Nominees Ltd                                            218,074    
Greig Middleton Nominees Limited (GM1)                                       250
JPMORGAN (BGI CUSTODY)                                                 1,850,966   
JP MORGAN (BGI CUSTODY)                                                  232,238 
JP MORGAN (BGI CUSTODY)                                                  273,614
MIDLAND BANK (HSBC BANK PLC)                                             128,327 
NORTHERN TRUST                                                           128,478 
R C Greig Nominees Limited                                                 7,750 
R C Greig Nominees Limited  GP1                                            3,200 
R C Greig Nominees Limited A/C AK1                                         6,950 
R C Greig Nominees Limited a/c CM1                                         1,100 

                                                       Total           3,088,736 

 




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