Blocklisting Interim Review

Dialight PLC
21 May 2007


                    BLOCKLISTING SIX MONTHLY REVIEW


1. NAME OF COMPANY:      DIALIGHT PLC

2. NAME OF SCHEME:       BLOCKLISTING

3. PERIOD OF RETURN:     FROM:  21-NOV-06      TO:   21-MAY-07



4. NUMBER AND CLASS OF SHARE(S)              UK       UK SHARE        TOTAL
   (AMOUNT OF STOCK/DEBT SECURITY)       SHARESAVE     OPTION 
   NOT ISSUED UNDER SCHEME
   AT END OF THE LAST PERIOD:              21,041      1,459          22,500

                       
                


5. NUMBER OF SHARES ISSUED/    ALLOTTED      -             0               0
   ALLOTTED UNDER SCHEME 
   DURING PERIOD:              ISSUED        -             0               0



6. BALANCE UNDER SCHEME NOT YET 
   ISSUED/ALLOTTED 
   AT END OF PERIOD:                       21,041      1,459          22,500 



7. NUMBER AND CLASS OF SHARE(S)        895,028 SHARES BLOCKLISTED ON 14 SEP 2005
   (AMOUNT OF STOCK/DEBT               150,000 SHARES BLOCKLISTED ON 24 MAY 1994
   SECURITIES) ORIGINALLY LISTED       175,000 SHARES BLOCKLISTED ON 24 JAN 1996
   AND THE DATE OF ADMISSION:          370,000 SHARES BLOCKLISTED ON 12 MAY 1999
                                       275,000 SHARES BLOCKLISTED ON 11 APR 2001

PLEASE CONFIRM TOTAL NUMBER OF SHARES IN ISSUE AT THE END OF THE PERIOD
IN ORDER FOR US TO UPDATE OUR RECORDS.

31,239,501 ORDINARY SHARES

CONTACT FOR QUERIES

NAME:               C A BUCKLEY

TELEPHONE:          [phone]


END



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