- Filing of certain prospectuses and communications in connection with business combination transactions (425)

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UNITED STATES SECURITIES AND EXCHANGE
COMMISSION
Washington, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 19, 2008

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Tower Group, Inc.
(Exact name of registrant as specified in its charter)

Delaware	000-50990	13-3894120
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

120 Broadway, 31 ^st Floor
New York, NY 10271
(Address of principal executive offices)

[phone]
(Registrant’s telephone number, including area code)

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

⊠ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

⃞ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

⃞ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

⃞ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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Item 8.01     Other Events.

On December 19, 2008, Tower Group, Inc. (“Tower”) and CastlePoint Holdings, Ltd. (“CastlePoint”) issued a joint press release announcing the record dates and meeting dates relating to the merger of CastlePoint with and into a wholly-owned subsidiary of Tower, as previously announced on August 4, 2008.  A copy of the press release is attached as Exhibit 99.1 to this Form 8-K and is incorporated by reference to this Item 8.01 as if fully set forth herein.

Item 9.01     Financial Statements and Exhibits.

The following exhibits are filed as part of this report.

Number	Description
99.1	Copy of press release issued by Tower Group, Inc. and CastlePoint Holdings, Ltd., dated December 19, 2008.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

		Tower Group, Inc.
			Registrant
Date:	December 19, 2008		/s/ Francis M. Colalucci
			FRANCIS M. COLALUCCI
			Senior Vice President & Chief Financial Officer

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Exhibit Index

Number	Description
99.1	Copy of press release issued by Tower Group, Inc. and CastlePoint Holdings, Ltd., dated December 19, 2008.