Holding(s) in Company

RNS Number:9069I
AEA Technology PLC
18 March 2003


                      DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

     AEA TECHNOLOGY PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

     PRUDENTIAL PLC AND CERTAIN SUBSIDIARIES

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 BELOW

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

     SEE BELOW

5)   Number of shares/amount of stock acquired.

     NOT KNOWN

6)   (%) of issued Class

     NOT KNOWN
     
7)   Number of shares/amount of stock disposed

     N/A

8)   (%) of issued Class

     N/A

9)   Class of security

     ORDINARY 12.122 PENCE

10)  Date of transaction

     NOT KNOWN

11)  Date company informed

     18 MARCH 2003

12)  Total holding following this notification

     SEE BELOW
               
13)  Total percentage holding of issued class following this notification

     SEE BELOW

14)  Any additional information



15)  Name of contact and telephone number for queries

     KEITH RUSSELL
     01235 433195
   
16)  Name and signature of authorised company official responsible for 
     making this notification

     Date of Notification   18/3/2003


Letter to: AEA Technology Plc

Companies Act 1985 (as amended):
Disclosure of Interests in Shares

In accordance with Part VI of the Companies Act 1985 (as amended)(the "Act"),
we write to inform you that Prudential plc and certain of its subsidiary
companies have a notifiable interest in the issued share capital of your company
as detailed in the schedule below.

For the purposes of S210 of the Act, the address for those companies identified
in the below schedule is Laurence Pountney Hill London EC4R 0HH.


Letter from:  M&G Investment Management Limited
              for and on behalf of Prudential plc



            Notifiable Position Report for AEA TECHNOLOGY ORD GBP0.1222
                              as at 17 March 2003

Percentage holdings are calculated using an issued share capital of 70,107,474 
ORD GBP0.1222 shares

                 Registered Holder                  Holding     %

Prudential plc                                    7,919,730   11.29   Total  
                                                                      Notifiable
                                                                      Interest
                 CHASE NOMS LTD                      29,454
                 CLYDESDALE BK NOMS LTD MGA       1,227,738
                 CLYDESDALE BK NOMS LTD MGG       4,457,751
                 CLYDESDALE BK NOMS LTD MGT          11,045
                 NORTRUST NOMS LTD                  180,539 
                 PRUCLT HSBC GIS NOM(UK) PAC AC   1,799,349
                 PRUCLT HSBC GIS NOM(UK) PPL AC     213,854


M&G Group Limited                                 7,745,736   10.04
                 CHASE NOMS LTD                      29,454
                 CLYDESDALE BK NOMS LTD MGA       1,227,738
                 CLYDESDALE BK NOMS LTD MGG       4,457,751
                 CLYDESDALE BK NOMS LTD MGT          11,045
                 NORTRUST NOMS LTD                    6,545 
                 PRUCLT HSBC GIS NOM(UK) PAC AC   1,799,349
                 PRUCLT HSBC GIS NOM(UK) PPL AC     213,854
   

            Notifiable Position Report for AEA TECHNOLOGY ORD GBP0.1222
                              as at 17 March 2003

Percentage holdings are calculated using an issued share capital of 70,107,474 
ORD GBP0.1222 shares


                 Registered Holder                  Holding      %

M&G Investment Management                         7,734,691    11.03
Limited                                                          
                 CHASE NOMS LTD                      29,454
                 CLYDESDALE BK NOMS LTD MGA       1,227,738
                 CLYDESDALE BK NOMS LTD MGG       4,457,751
                 NORTRUST NOMS LTD                    6,545 
                 PRUCLT HSBC GIS NOM(UK) PAC AC   1,799,349
                 PRUCLT HSBC GIS NOM(UK) PPL AC     213,854
   

M&G Limited                                       7,745,736    11.04
                 CHASE NOMS LTD                      29,454
                 CLYDESDALE BK NOMS LTD MGA       1,227,738
                 CLYDESDALE BK NOMS LTD MGG       4,457,751
                 CLYDESDALE BK NOMS LTD MGT          11,045
                 NORTRUST NOMS LTD                    6,545 
                 PRUCLT HSBC GIS NOM(UK) PAC AC   1,799,349
                 PRUCLT HSBC GIS NOM(UK) PPL AC     213,854


                      This information is provided by RNS
            The company news service from the London Stock Exchange
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