EXHIBIT 99.6
August 13, 2004
Xxxxxxx River Laboratories International, Inc.
000 Xxxxxxxxxxx Xxxxxx
Xxxxxxxxxx, Xxxxxxxxxxxxx 00000
Re: Registration Statement on Form S-4
Ladies and Gentlemen:
Reference is hereby made to the Agreement and Plan of Merger, dated as of
June 30, 2004 (the "Merger Agreement"), by and among Xxxxxxx River
Laboratories International, Inc. ("Xxxxxxx River"), Inveresk Research Group,
Inc., Indigo Merger I Corp. and Indigo Merger II Corp.
I hereby consent to being named in the Registration Statement on Form S-4 to
be filed by Xxxxxxx River with the U.S. Securities and Exchange Commission in
connection with the transactions provided for in the Merger Agreement, as a
person who will become a director of Xxxxxxx River at the effective time of
the First Merger (as that term is defined in the Merger Agreement).
Very truly yours,
/s/ X. Xxxxxx XxXxxxx
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X. Xxxxxx XxXxxxx
