Holding(s) in Company

Henderson Opportunities Trust PLC
30 November 2007


TR-1:               notification of major interests in shares

1. Identity of the issuer or the underlying issuer of existing      Henderson Opportunities Trust plc
shares to which voting rights are attached:

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               Henderson Global Investors Ltd
obligation:

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

5. Date of the transaction (and date on which the threshold is               23 November 2007
crossed or reached if different):

6. Date on which issuer notified:                                          30 November 2007

7. Threshold(s) that is/are crossed or reached:                                  8% - 9%

8. Notified details:






A: Voting rights attached to shares
Class/type of     Situation previous to the Resulting situation after the triggering transaction
shares            Triggering transaction

 if possible      Number of    Number of    Number of    Number of voting     % of voting rights
using the ISIN    Shares       Voting       shares       rights
CODE                           Rights
                                            Direct       Direct      Indirect Direct       Indirect

ORD               731,753      731,753      756,753      756,753              9.2197%




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
756,753                                            9.2197%




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



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:                                 Vina Patel

15. Contact telephone number:                     [phone]

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)

Contact address (registered office for legal entities)

Phone number
Other useful information (at least legal representative
for legal persons)



B:        Identity of the notifier, if applicable

Full name

Contact address

Phone number

Other useful information (e.g. functional relationship
with the person or legal entity subject to the
notification obligation)



C:        Additional information





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