Holding(s) in Company

Ceres Power Holdings plc
13 February 2008


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:

Ceres Power Holdings PLC

2. Reason for the notification     (please tick the appropriate box or boxes)

An acquisition or disposal of voting rights

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):________Increase in shares outstanding                x


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

OppenheimerFunds Inc (OFI)

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

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

 February 7, 2008

6. Date on which issuer notified:                                           

February 11, 2008

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

6% (6.36%)

8. Notified details:                                             

[e-mail]




A: Voting rights attached to shares
Class/type of    Situation previous to Resulting situation after the triggering transaction
shares           the Triggering
                 transaction
 if possible     Number of  Number of  Number of    Number of voting rights   % of voting rights
using the ISIN   Shares     Voting     shares
CODE                        Rights     Direct       Direct       Indirect     Direct       Indirect
GB00B0351429

OFI              4,412,600  4,412,600  4,244,740                 4,244,740                 6.36%


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

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

4,244,740                                          6.36%




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

OppenehimerFunds, Inc. owns, as of 2/7/08, 4,244,740 shares equal to 6.36% of 
the shares outstanding (66,725,055).




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:
14. Contact name:
15. Contact telephone number:

Annex Notification Of Major Interests In Shares
A: Identity of the person or legal entity subject to the notification obligation
Full name (including legal form for legal entities)        OppenheimerFunds, Inc. (OFI)
Contact address (registered office for legal entities)     OFI: 2 World Financial Center, 225 Liberty
                                                           Street, New York, NY 10080 USA
Phone number                                               OFI: 212-323-0200
Other useful information (at least legal representative
for legal persons)



B:        Identity of the notifier, if applicable
Full name                                                  Rose Baker, Compliance Consultant
Contact address                                            Massachusetts Mutual Life Insurance Co.

                                                           1295 State Street

                                                           Springfield, MA 01111-0001

                                                           USA
Phone number                                                  413-744-8258
Other useful information (e.g. functional relationship     Massachusetts Mutual Life Insurance Company is
with the person or legal entity subject to the             the parent company of OppenheimerFunds, Inc.
notification obligation)



C:        Additional information




Notes


                      This information is provided by RNS
            The company news service from the London Stock Exchange