SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

SCHEDULE 13D
(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

RULE 13d-2(a)

(Amendment No. 2)(1)

Life Sciences Research, Inc.

(Name of Issuer)

Voting Common Stock, $.01 par value

(Title of Class of Securities)

5321691090

(CUSIP Number)

Brian Cass
c/o Life Sciences Research, Inc. Woolley Road Alconbury, Huntingdon Cambridgeshire PE28 4HS United Kingdom
+44 (0) 1480 892 000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

December 18, 2007

(Date of Event which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box [_].

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent.

(Continued on following pages)

(Page 1 of Pages)


(1) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

(SC13D-07/99)


CUSIP No.5321691090 13D Page___ of __ Pages


________________________________________________________________________________
1 NAME OF REPORTING PERSONS
 I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 Brian Cass

________________________________________________________________________________
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) [_]
 (b) [x]

________________________________________________________________________________
3 SEC USE ONLY



________________________________________________________________________________
4 SOURCE OF FUNDS*

 Not Applicable

________________________________________________________________________________
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
 PURSUANT TO ITEMS 2(d) OR 2(e) [_]

 Not applicable

________________________________________________________________________________
6 CITIZENSHIP OR PLACE OF ORGANIZATION

 United Kingdom

________________________________________________________________________________
 7 SOLE VOTING POWER 711,393

 NUMBER OF

 SHARES _________________________________________________________________
 8 SHARED VOTING POWER 0
BENEFICIALLY

 OWNED BY
 _________________________________________________________________
 EACH 9 SOLE DISPOSITIVE POWER 711,393

 REPORTING

 PERSON _________________________________________________________________
 10 SHARED DISPOSITIVE POWER 0
 WITH


________________________________________________________________________________
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 711,393

________________________________________________________________________________
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

 Not applicable [_]

________________________________________________________________________________
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 5.5%

________________________________________________________________________________
14 TYPE OF REPORTING PERSON*

 IN

________________________________________________________________________________
 *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.5321691090 13D Page___ of __ Pages


________________________________________________________________________________
1 NAME OF REPORTING PERSONS
 I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

 Brian Cass Private Pension Plan

________________________________________________________________________________
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) [_]
 (b) [x]

________________________________________________________________________________
3 SEC USE ONLY



________________________________________________________________________________
4 SOURCE OF FUNDS*

 Not Applicable

________________________________________________________________________________
5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
 PURSUANT TO ITEMS 2(d) OR 2(e) [_]

 Not applicable

________________________________________________________________________________
6 CITIZENSHIP OR PLACE OF ORGANIZATION

 United Kingdom

________________________________________________________________________________
 7 SOLE VOTING POWER 0

 NUMBER OF

 SHARES _________________________________________________________________
 8 SHARED VOTING POWER 0
BENEFICIALLY

 OWNED BY
 _________________________________________________________________
 EACH 9 SOLE DISPOSITIVE POWER 0

 REPORTING

 PERSON _________________________________________________________________
 10 SHARED DISPOSITIVE POWER 0
 WITH


________________________________________________________________________________
11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 48,243

________________________________________________________________________________
12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

 Not applicable [_]

________________________________________________________________________________
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

 Less than 1%.

________________________________________________________________________________
14 TYPE OF REPORTING PERSON*

 EP

________________________________________________________________________________
 *SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No. 13D Page of Pages
________________________________________________________________________________
Item 1. Security and Issuer.

 Class of Securities: Voting Common Stock, $.01 par value per share
 (the "Common Stock")
 Issuer: Life Sciences Research, Inc. (the "Issuer"), P.O. Box 2360,
 Mettlers Road, East Millstone, NJ 08875

________________________________________________________________________________
Item 2. Identity and Background.

 (a) Name: Brian Cass

 (b) Business Address: Brian Cass
 c/o Life Sciences Research, Inc.
 Woolley Road
 Alconbury, Huntingdon
 Cambridgeshire PE28 4HS
 United Kingdom

 (c) Principal Occupation or Employment:

 President of the Issuer.

 (d) Criminal Convictions: None.

 (e) Civil Adjudication of Violation of Securities Laws: None.

 (f) Citizenship: United Kingdom citizen.

________________________________________________________________________________
Item 3. Source and Amount of Funds or Other Consideration.

 Not applicable

________________________________________________________________________________
Item 4. Purpose of Transaction.

 (a)-(j) This filing is made to report the transfer by Mr. Cass into his
personal pension plan on December 18, 2007 of 16,750 shares of Common Stock.
________________________________________________________________________________
Item 5. Interest in Securities of the Issuer.

 (a) Beneficial Ownership by the Reporting Person:

 Number of Shares
 ----------------

 Aggregate number of shares: 711,393
 Percentage: 5.5%(based on 12,623,348 outstanding
 shares of common stock as of
 10/29/07 as reported in the
 Issuer's Form 10-Q for the
 Quarter ended September 30, 2007
 plus 255,500 shares subject to
 presently exercisable options
 held by Mr.Cass being deemed
 outstanding)

 (b) Sole Voting Power: 711,393
 Shared Voting Power: 0
 Sole Dispositive Power: 711,393
 Shares Dispositive Power: 0


 (c) Mr. Cass transferred 16,750 shares of Common Stock into his personal
 pension plan.

 (d) Not applicable.

 (e) Not applicable.

________________________________________________________________________________
Item 6. Contracts, Arrangements, Understandings or Relationships with Respect
 to Securities of the Issuer.


 Not applicable.

________________________________________________________________________________
Item 7. Material to be Filed as Exhibits.

 None.

________________________________________________________________________________


SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

December 20, 2007
(Date)

 /s/ Brian Cass
----------------------------------------
 (Signature)

Brian Cass
(Name/Title)

Attention. Intentional misstatements or omissions of fact constitute federal criminal violations (see 18 U.S.C. 1001).

EDGARLink 7.0 (8/00) Ver. 3.1

Life Sciences Research (NYSE:LSR)
Gráfico Histórico do Ativo
De Mai 2024 até Jun 2024 Click aqui para mais gráficos Life Sciences Research.
Life Sciences Research (NYSE:LSR)
Gráfico Histórico do Ativo
De Jun 2023 até Jun 2024 Click aqui para mais gráficos Life Sciences Research.