Holding(s) in Company

Dialight PLC
18 October 2007




                                                                   
TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES


(1). Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached:

DIALIGHT PLC


2. Reason for the notification (please state Yes/No): (   )

An acquisition or disposal of voting rights:                               (YES)

An acquisition or disposal of financial instruments which may result 
in the acquisition of shares already issued to which voting rights are 
attached:                                                                  (NO)

An event changing the breakdown of voting rights:                          (NO)

Other (please specify) :                                                   (NO)


 
3. Full name of person(s) subject to the notification obligation:

BT PENSION SCHEME TRUSTEES LIMITED AS TRUSTEE OF THE BT PENSION SCHEME.

SEE SECTION 9 FOR FURTHER INFORMATION 

4. Full name of shareholder(s) (if different from 3.):

HERMES UK SMALL COMPANIES FOCUS FUND
 

5. Date of the transaction and date on which the threshold is crossed or reached
if different):

16 OCTOBER 2007
 

6. Date on which issuer notified:

17 OCTOBER 2007
 

7. Threshold(s) that is/are crossed or reached:

26%
 

8. Notified details:


 


A: Voting rights attached to shares

 
Class/type of shares            Situation previous to  
if possible using the           the Triggering         
ISIN CODE                       transaction        
                       Number of shares       Number of voting Rights 

ORDINARY SHARES        7,971,304              7,971,304
 

                     Resulting situation after the triggering transaction 
 
Class/type of shares Number of shares  Number of voting rights    % of voting rights  
if possible using                                                                 
the ISIN CODE                                                                         
                     Direct            Direct     Indirect        Direct    Indirect  

ORDINARY SHARES      0                 0          8,271,304        0%        26.477%
 

B: Financial Instruments

Resulting situation after the triggering transaction 

Type of     Expiration Date  Exercise/Conversion Number of voting     % of voting     
financial                    Period/ Date        rights that may be   rights          
instrument                                       acquired if the                      
                                                 instrument is                        
                                                 exercised/                           
                                                 converted.                           

NIL
 


Total (A+B)
Number of voting rights       % of voting rights 

8,271,304                       26.477%
 

9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:

BT Pension Scheme Trustees Limited is the parent undertaking of Britel Fund
Trustees Limited, which is the parent undertaking of Hermes Pensions Management
Limited. Hermes Pension Management Limited is the parent undertaking of: 

1.  Hermes Investment Management Limited (voting rights held in the issuer: 0%) 

2.  Hermes Focus Asset Management Limited (voting rights held in this issuer:
    26.477%)
 
Please see Section 13 for further information.

 

Proxy Voting:

 
10. Name of the proxy holder:

SEE COMMENT IN SECTION 13
 

11. Number of voting rights proxy holder will cease to hold:


SEE COMMENT IN SECTION 13
 

12. Date on which proxy holder will cease to hold voting rights:


SEE COMMENT IN SECTION 13
 

13. Additional information:

Hermes Investment Management Limited hold the voting rights under a standing
proxy contained in investment management agreements with various underlying
clients, which includes all the shares owned directly by BT Pension Scheme.

Hermes Focus Asset Management Limited hold the voting rights as General Partner
under a standing proxy contained in limited partnership agreements with various
limited partnerships. 

All voting rights held on behalf of the above entities are aggregated for the 
purposes of DTR 5.2.1 (a) and disclosed pursuant to DTR 5.1.5.

This disclosure is made by BT Pension Scheme Trustees Limited, which is
the ultimate parent undertaking for the purposes of DTR 5.2.1 (e)



14. Contact name:

CATHRYN BUCKLEY
 

15. Contact telephone number:

01480 447490






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