Holding(s) in Company

Dialight PLC
20 January 2006



             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF LISTED COMPANY

DIALIGHT PLC


2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

AVIVA PLC AND ITS SUBSIDIARIES

3)   Please state whether notification indicates that it is 
     regarding the holding of the shareholder named in 2 above;
     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 ABOVE

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

MORLEY FUND MANAGEMENT LIMITED
BNY NORWICH UNION NOMINEES LIMITED           311,073
CHASE GA GROUP NOMINEES LIMITED            1,340,293
CUIM NOMINEE LIMITED                         368,198
                         TOTAL             2,019,564

5)   Number of shares/amount of stock acquired.



6)   Percentage of issued Class (any treasury shares held by the
     listed company should not be taken into account when
     calculating percentage)



7)   Number of shares/amount of stock disposed

504,178

8)   Percentage of issued Class (any treasury shares held by the
     listed company should not be taken into account when
     calculating percentage)

1.63%

9)   Class of security

ORDINARY SHARES OF 1.89P EACH

10)  Date of transaction

13-JAN-06

11)  Date listed company informed

19-JAN-06

12)  Total holding following this notification

2,019,564
               
13)  Total percentage holding of issued class following this notification
     (any treasury shares held by the listed company should not be taken
     into account when calculating percentage)

6.51%

14)  Any additional information



15)  Name of contact and telephone number for queries

C A BUCKLEY
01480 447490

16)  Name and signature of duly authorised officer of the listed company
     responsible for making this notification

     Date of Notification ......  20-JAN-06 ..................





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