RNS Number:5913O
Cosalt PLC
12 August 2003

                  DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

COSALT PLC


2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

AMVESCAP PLC


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

AS 2 ABOVE


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

VIDACOS NOMINEES LIMITED


5)   Number of shares/amount of stock acquired.

253,939


6)   ( 1.91 %) of issued Class

7)   Number of shares/amount of stock disposed



8)   (  %) of issued Class

9)   Class of security

ORDINARY SHARES OF 25P EACH


10)  Date of transaction

4TH AUGUST 2003


11)  Date company informed

11TH AUGUST


12)  Total holding following this notification

1,909,061

               
13)  Total percentage holding of issued class following this notification

14.40%


14)  Any additional information



15)  Name of contact and telephone number for queries

A J ROBSON     01472 504275


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

     Date of Notification ........................12.08.2003


                  DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

COSALT PLC


2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

B RAPPAPORT


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

AS 2 ABOVE


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

HSBC GLOBAL CUSTODY NOMINEE (UK) A/C 813259     1,155,367
EARDLEY INVESTMENTS NV - CURACO                 2,110,000


5)   Number of shares/amount of stock acquired.



6)   ( %) of issued Class

7)   Number of shares/amount of stock disposed



8)   ( %) of issued Class

9)   Class of security

ORDINARY SHARES OF 25P EACH


10)  Date of transaction

04TH AUGUST 2003


11)  Date company informed

12TH AUGUST


12)  Total holding following this notification

3,265,367

               
13)  Total percentage holding of issued class following this notification

24.64%


14)  Any additional information

THIS IS A REDUCTION IN HOLDING FROM 26.14% OF SHARE CAPITAL AS THE RESULT OF THE
ISSUE OF 623,816 ORDINARY SHARES


15)  Name of contact and telephone number for queries

A J ROBSON     01472 504275


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

     Date of Notification ........................12.08.2003


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