Holding(s) in Company

Diploma PLC
18 December 2006

Letter to Diploma Plc
Dated 13 December, 2006



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

I hereby inform you that as at 12-December-06 Barclays PLC, through the legal 
entities listed on the attached schedule, has a notifiable interest in the 
capital of your Company of 10.73%
 
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 12 December 2006 Barclays PLC through the legal entities listed below, 
had a notifiable interest in 2,430,761 ORD GBP0.05 representing 10.73% of the 
issued share capital of 22,647,911 units.
 
Legal Entity                              Holding                Percentage Held
 
Barclays Capital Securities Ltd           436,148                         1.9258 
Gerrard Ltd                                19,687                          .0869 
Barclays Global Investors Ltd           1,225,749                         5.4122 
Barclays Bank PLC                          20,200                          .0892 
Gerrard Ltd                                 1,350                          .0060 
Barclays Global Investors Ltd             501,200                         2.2130 
Barclays Life Assurance Co Ltd            196,622                          .8682 
Barclays Bank PLC                          29,805                          .1316 


                       Group Holding    2,430,761                        10.7329




 

                              REGISTERED HOLDERS REPORT 


DIPLOMA                                                           SEDOL: 0182663
 
As at 12 December 2006 Barclays PLC, through the registered holders listed 
below, had a notifiable interest in 2,430,761 ORD GBP0.05 representing 10.73% 
of the issued share capital of 22,647,911 units. 

Registered Holder                           Account Designation          Holding
 
BANK OF IRELAND                             258227                        31,323 
BANK OF IRELAND                             4239749                       47,200 
BANK OF IRELAND                             427057                         3,893 
BANK OF NEW YORK                            210405                        27,405 
BANK OF NEW YORK                            221428                        23,939 
BANK OF NEW YORK                            768198                         6,186 
Bank of Ireland Nominees Limited            CREST ID; 11X13               20,200 
Barclays Capital Nominees Ltd                                            436,148 
Barclays Capital Nominees Ltd                                             29,805 
CHASE NOMINEES LTD                          16376                         12,486 
CHASE NOMINEES LTD                          20947                        899,927 
CHASE NOMINEES LTD                          21359                         73,140 
CHASE NOMINEES LTD                          25772                         23,437 
CHASE NOMINEES LTD                          27800                         65,685 
CHASE NOMINEES LTD                          28270                         28,438 
CHASE NOMINEES LTD                          31961                         74,256 
CITIBANK                                    6010782807                    13,111 
Greig Middleton Nominees Limited (GM1)                                       250 
HSBC                                        845315                         1,122 
JPMORGAN (BGI CUSTODY)                      16331                         30,578 
JP MORGAN (BGI CUSTODY)                     16341                         80,837 
JP MORGAN (BGI CUSTODY)                     16344                         19,839 
JP MORGAN (BGI CUSTODY)                     16345                         36,930 
JP MORGAN (BGI CUSTODY)                     16400                        123,079 
JP MORGAN (BGI CUSTODY)                     16482                         99,442 
JP MORGAN (BGI CUSTODY)                     16612                          4,350 
JP MORGAN (BGI CUSTODY)                     16901                          4,601
JP MORGAN (BGI CUSTODY)                     18409                         17,675 
JP MORGAN (BGI CUSTODY)                     38245                          2,928 
MIDLAND BANK (HSBC BANK PLC)                772823                        91,127 
NORTHERN TRUST                              CVS21                         34,366 
NORTHERN TRUST                              TNF01                         10,681 
NORTHERN TRUST                              UKEO1                         35,590  
R C Greig Nominees Limited                                                 8,187 
R C Greig Nominees Limited                                                 1,350 
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           2,430,761 

 

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