Holding(s) in Company

Diagonal PLC
23 May 2003


                  DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

      DIAGONAL PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

      HENDERSON GLOBAL INVESTORS LTD

3)   Please state whether notification indicates that it is in respect of 
     holding of the Shareholder named in 2 above or in respect of a 
     non-beneficial interest or in the case of an individual holder if it is a
     holding of that person's spouse or children under the age of 18

      SEE 2 ABOVE

4)   Name of the registered holder(s) and, if more than one holder, the 
     number of shares held by each of them.

      HENDERSON GLOBAL INVESTORS LTD

5)   Number of shares/amount of stock acquired.

        -

6)   ( N/A %) of issued Class

7)   Number of shares/amount of stock disposed

      125,000

8)   (0.14%) of issued Class

9)   Class of security

      ORDINARY SHARES OF 10P EACH

10)  Date of transaction

      22 MAY 2003

11)  Date company informed

      23 MAY 2003

12)  Total holding following this notification

      9,811,945
               
13)  Total percentage holding of issued class following this notification

      10.98%

14)  Any additional information

       N/A

15)  Name of contact and telephone number for queries

      IAN FARRELLY
      01252 733 711

16)  Name and signature of authorised company official responsible for 
     making this notification

     Date of Notification ....23RD MAY 2003......



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