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<FILENAME>dtrelease.txt
<DESCRIPTION>PRESS RELEASE
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PRESS RELEASE                           LIFE SCIENCES RESEARCH, INC.
                                        (OTCBB: LSRI)
                                        PO Box 2360
                                        Mettlers Road
                                        East Millstone, NJ 08875-2360

                                        For Further Information:
                                        Richard Michaelson
                                        Phone:   US: (732) 649-9961
                                        e-mail: LifeSciencesResearch@LSRinc.net


February 28, 2003


                   LSR ANNOUNCES DECISION BY DELOITTE & TOUCHE
                          NOT TO STAND FOR RE-ELECTION


East Millstone,  New Jersey,  February 28, 2003 - Life Sciences  Research,  Inc.
(OTCBB:LSRI)  confirmed  today the  announcement  by Deloitte & Touche that upon
completion of the Company's  audit for 2002, they will not stand for re-election
as the  Company's  independent  auditors.  The  decision  was made by Deloitte &
Touche  following a campaign by animal rights groups  against them.  The Company
has been advised by Deloitte & Touche that their  decision  does not reflect any
differences with the Company on accounting  issues. The Company expects to issue
its audited 2002 financials by mid-March, as previously anticipated.

Brian  Cass,  President  of Life  Sciences  Research,  said  "2002  has  been an
excellent   year  for  LSR.  Our  financial   results  have  shown   substantial
improvement,  with strong cash flow generation and steadily  improving  revenues
and margins.  We look forward to issuing fourth quarter results  shortly,  which
are  expected  to be  ahead  of both  prior  year  and  prior  quarter.  Equally
promising,  the  growing  support  which we have  seen from  government  and law
enforcement has bolstered our confidence that companies like LSR will be able to
perform  their  important  work without the  unlawful and coercive  actions of a
small number of extremists who seek to undermine our business system".

Cass  continued  "We have had an excellent  relationship  with  Deloitte  over a
number of years and are disappointed  that they have been coerced into having to
make this decision. LSR is committed to continue to work closely with government
and law  enforcement  agencies to more  effectively  protect people and entities
from the sort of threats and tactics of extremists that have befallen Deloitte."

Life Sciences  Research,  Inc. is one of the world's leading  Contract  Research
Organizations  providing  product  development  services to the  pharmaceutical,
agrochemical and  biotechnology  industries.  LSR brings leading  technology and
capability  to  support  its  clients  in  non-clinical  safety  testing  of new
compounds in early stage development and assessment. The purpose of this work is
to identify risks to humans,  animals or the environment  resulting from the use
or  manufacture of a wide range of chemicals  which are essential  components of
LSR's  clients'  products.  The  Company's  services  are  designed  to meet the
regulatory  requirements of governments  around the world. LSR operates research
facilities in the United States (the Princeton  Research Center, New Jersey) and
the United Kingdom (Huntingdon and Eye, England).

This announcement  contains statements that may be forward-looking as defined by
the Private Securities Litigation Reform Act of 1995. These statements are based
largely  on  LSR's  expectations  and are  subject  to a  number  of  risks  and
uncertainties,  certain  of  which  are  beyond  LSR's  control,  as more  fully
described in LSR's Registration  Statement on Form S-1, dated July 12, 2002, and
the  Company's  Form 10-K for the fiscal year ended  December 31, 2001,  each as
filed with the US Securities and Exchange Commission.


                                     - end -


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