Life Sciences Research 10-K 2008 FY Annual report

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Life Sciences Research, Inc. (“LSR”) on Form 10-K for the year ended December 31, 2008, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Andrew H Baker, Chairman of the Board and Chief Executive Officer of LSR certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of LSR.

Date:  March 13, 2009	/s/ Andrew H. Baker
	______________________
	Andrew H. Baker
	Chief Executive Officer