Holding(s) in Company

Byotrol PLC
13 February 2008



TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES





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



Byotrol Plc



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



An acquisition or disposal of voting rights: (X)



An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached: ( )



An event changing the breakdown of voting rights: ( )



Other (please specify): ( )



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



BlackRock, Inc.



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



n/a



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



8 February 2008



6.      Date on which issuer notified:



12 February 2008



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



Gone above 5%


8.      Notified details:





A:   Voting rights attached to shares


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


GB00B0999995                      2,197,912                          2,197,912



Resulting situation after the triggering transaction (vii)


Class/type of shares if         Number of shares         Number of voting rights (ix)  % of voting rights
possible using the ISIN CODE
                                Direct                   Direct (x)  Indirect (xi)     Direct    Indirect


GB00B0999995                    N/A                      N/A         2,237,815                   5.01%



B:   Financial Instruments

Resulting situation after the triggering transaction (xii)


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






Total (A+B)


Number of voting rights           % of voting rights

2,237,815                         5.01%



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



BlackRock Investment Management (UK) Limited - 2,237,815 (5.01%)


Proxy Voting:



10.    Name of the proxy holder:



n/a



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



n/a



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



n/a



13.    Additional information:



n/a



14.    Contact name:



         Thomas Hone



15.    Contact telephone number:



    020 7743 2098






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