Holding(s) in Company

Proton Power Systems PLC
18 June 2007


TR-1(i):               notification of major interests in shares


1. Identity of the issuer or the underlying issuer of         Proton Power Systems plc
existing shares to which voting rights are attached(ii):
2. Reason for the notification (please tick the appropriate box or boxes):
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    1.  Lombard Atlantic Bank N.V.
obligation(iii):
                                                         2.  Maan Abdulwahed Al-Sanea

                                                         3.  Awal Trust Company Limited

                                                         4.  Saad Investments Company Limited
4. Full name of shareholder(s) (if different from 3.)
(iv):
                                                         1.  Lombard Atlantic Bank N.V.

                                                         2.  Giltspur Nominees Limited
5. Date of the transaction and date on which the         7 December 2006
threshold is crossed or reached(v):
6. Date on which issuer notified:                        15 June 2007
7. Threshold(s) that is/are crossed or reached:          3% and 4%
8. Notified details:


A: Voting rights attached to shares
Class/type of shares Situation previous to   Resulting situation after the triggering transaction(vii)
                     the Triggering
 if possible using   transaction (vi)
the ISIN CODE        Number of   Number of   Number of     Number of voting rights  % of voting rights
                     Shares      Voting      shares        ix
                                 Rights viii               Direct  x   Indirect xi  Direct     Indirect
Ordinary             Below 3%    Below 3%    1,500,000     750,000     750,000      2.38%      2.38%

ISIN Code

GB00B140Y116


B: Financial Instruments
Resulting situation after the triggering transaction xii
Type of financial    Expiration date Exercise/ Conversion      Number of voting rights    % of voting
instrument           xiii            Period/ Date xiv          that may be acquired if    rights
                                                               the instrument is
                                                               exercised/ converted.



Total (A+B)
Number of voting rights                            % of voting rights
1,500,000                                          4.77%


9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively
held, if applicable xv:
Maan Abdulwahed Al-Senea is subject to a notification obligation pursuant to DTR 5.2.1(e) as a 'parent undertaking' of
Lombard Atlantic Bank N.V. ('LAB') and Awal Bank BSC ('ABB').

LAB is wholly owned by Saad Investments Company Limited ('SICL') which is 94.72% owned by Awal Trust Company Limited ('
ATCL') as trustee of the Saad STAR Trust.  SICL and ATCL are therefore subject to a notification obligation pursuant to
DTR 5.2.1(e) as a 'parent undertaking' of LAB.


Proxy Voting:
10. Name of the proxy holder:
11. Number of voting rights proxy holder will cease to hold:
12. Date on which proxy holder will cease to hold voting rights:


13. Additional information:                  Lombard Atlantic Bank N.V. currently holds directly 750,000
                                             (2.38%) shares and indirectly 375,000 (1.19%).  Awal Bank BSC
                                             currently holds indirectly 375,000 (1.19%) shares.
14. Contact name:                            Benedikt Eska
15. Contact telephone number:                00 49 8151 268640



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