Ordinary Shares Listing Date

Intl. Biotechnology Trust PLC
22 May 2007

                                                                     22 May 2007




               C SHARE CONVERSION - ORDINARY SHARES LISTING DATE


Further to the announcement released on 17 May 2007, the Board of International
Biotechnology Trust plc (the 'Company') notifies a change in the timetable for
the expected listing of new Ordinary Shares once converted from C Shares.


In accordance with the Conversation Ratio already announced, the C Shares will
convert into Ordinary Shares immediately prior to the listing of the Ordinary
Shares on the London Stock Exchange.  The new Ordinary Shares are now expected
to list on the London Stock Exchange at 8.00 am on 24 May. An application will
be made to cancel the listing of the C Shares with effect from 24 May 2007.


Enquiries:

Cenkos Securities                   Will Rogers

                                    020 7397 8900


SV Life Sciences Managers           Andy Smith/Kate Bingham

                                    020 7421 7070


Lansons Communications              Henrietta Guthrie/Amy Fisher/Charlotte Edgar

                                    020 7490 8828



International Biotechnology Trust plc  Andrew Barker, Chairman

                                       020 7658 6501










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