Holding(s) in Company

Henderson TR Pacific Inv. Trust PLC
21 June 2007


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

1. Identity of the issuer or the underlying issuer of existing    Henderson TR Pacific Investment Trust
shares to which voting rights are attached                                         PLC
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):_TRANSITIONAL NOTIFICATION OF MAJOR HOLDING
3. Full name of person(s) subject to the notification            ADVANCE DEVELOPING MARKETS TRUST PLC
obligation:
4. Full name of shareholder(s) (if different from 3.):                NORTRUST NOMINEES LIMITED
5. Date of the transaction (and date on which the threshold is                 20 JUNE 2007
crossed or reached if different):
6. Date on which issuer notified:                                                21 JUNE 2007
7. Threshold(s) that is/are crossed or reached:                                       5%
8. Notified details:










A: Voting rights attached to shares
Class/type of    Situation previous to Resulting situation after the triggering transaction(ii)
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       ix
CODE                        Rights     Direct       Direct       Indirect     Direct       Indirect
ORDINARY SHARES

GB0008710799     8,937,600  8,937,600  9,887,600    9,887,600    nil          5.45%        Nil




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.
        nil


Total (A+B)
Number of voting rights                            % of voting rights
9,887,600                                          5.45%










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


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:                  Progressive Developing Markets Ltd is investment manager to
                                             Advance Developing Markets Trust plc
14. Contact name:                                 Anthony Lee
15. Contact telephone number:                     020 7490 4355

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)        ADVANCE DEVELOPING MARKETS TRUST PLC
Contact address (registered office for legal entities)          145-157 ST JOHN STREET

                                                           LONDON, EC1V 4RU
Phone number                                                    020 7490 4355
Other useful information (at least legal representative
for legal persons)



B:        Identity of the notifier, if applicable
Full name                                                       ANTHONY LEE
Contact address                                                 CAVENDISH ADMINISTRATION LTD

                                                           145-157 ST JOHN STREET

                                                           LONDON, EC1V 4RU
Phone number                                                    020 7490 4355
Other useful information (e.g. functional relationship          COMPANY SECRETARY
with the person or legal entity subject to the
notification obligation)



C:        Additional information




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