UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 8, 2013

WMS INDUSTRIES INC.

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code: (847) 785-3000

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:

On April 8, 2013, WMS Industries Inc. (the “Company”) posted on its website answers to certain frequently asked employee questions related to the proposed merger of the Company with Scientific Games Corporation, a copy of which is attached hereto as an exhibit and incorporated in its entirety herein by reference.

Forward Looking Statements

This communication may contain forward-looking statements. Forward-looking statements may be typically identified by such words as “may,” “will,” “should,” “expect,” “anticipate,” “plan,” “likely,” “believe,” “estimate,” “project,” “intend,” and other similar expressions among others. These forward-looking statements are subject to known and unknown risks and uncertainties that could cause our actual results to differ materially from the expectations expressed in the forward-looking statements. Although we believe that the expectations reflected in our forward-looking statements are reasonable, any or all of our forward-looking statements may prove to be incorrect. Consequently, no forward-looking statements may be guaranteed and there can be no assurance that the actual results or developments anticipated by such forward looking statements will be realized or, even if substantially realized, that they will have the expected consequences to, or effects on, the Company or its business or operations. Factors which could cause our actual results to differ from those projected or contemplated in any such forward-looking statements include, but are not limited to, the following factors: (1) the risk that the conditions to the closing of the merger are not satisfied (including a failure of the stockholders of the Company to approve, on a timely basis or otherwise, the merger and the risk that regulatory approvals required for the merger are not obtained, on a timely basis or otherwise, or are obtained subject to conditions that are not anticipated); (2) litigation relating to the merger; (3) uncertainties as to the timing of the consummation of the merger and the ability of each of the Company and Scientific Games Corporation to consummate the merger; (4) risks that the proposed transaction disrupts the current plans and operations of the Company; (5) the ability of the Company to retain and hire key personnel; (6) competitive responses to the proposed merger; (7) unexpected costs, charges or expenses resulting from the merger; (8) the failure by Scientific Games Corporation to obtain the necessary debt financing arrangements set forth in the commitment letter received in connection with the merger; (9) potential adverse reactions or changes to business relationships resulting from the announcement or completion of the merger; and (10) legislative, regulatory and economic developments. The foregoing review of important factors that could cause actual events to differ from expectations should not be construed as exhaustive and should be read in conjunction with statements that are included herein and elsewhere, including the risk factors included in the Company’s most recent Annual Report on Form 10-K for the year ended June 30, 2012, and our more recent reports filed with the U.S. Securities and Exchange Commission (the “SEC”). The Company can give no assurance that the conditions to the Merger will be satisfied. Except as required by applicable law, the Company undertakes no obligation to revise or update any forward-looking statement, or to make any other forward-looking statements, whether as a result of new information, future events or otherwise.

Additional Information and Where to Find It

This communication is being made in respect of the proposed transaction involving the Company and Scientific Games. The proposed transaction will be submitted to the stockholders of the Company for their consideration. In connection with the proposed acquisition, on March 8, 2013, the Company filed preliminary materials with the SEC, including a preliminary proxy statement on Schedule 14A. These materials are not yet final and will be amended. The Company and Scientific Games Corporation also plan to file with the SEC other documents regarding the proposed transaction. THE COMPANY’S SECURITY HOLDERS ARE URGED TO READ THESE MATERIALS AND THE DEFINITIVE VERSIONS THEREOF AND ANY OTHER RELEVANT DOCUMENTS CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. When completed, a definitive proxy statement and a form of proxy will be mailed to the stockholders of the Company. The Company’s stockholders will be able to obtain, without charge, a copy of the proxy statement (when available) and other relevant documents filed with the SEC from the SEC’s website at http://www.sec.gov. The Company’s shareholders will also be able to obtain, without charge, a copy of the proxy statement and other relevant documents (when available) by going to the Company’s Investor Relations website page at http://ir.wms.com or by directing a written request by mail to WMS Industries Inc., Attn: Investor Relations, 800 South Northpoint Blvd., Waukegan, Illinois 60085, or by calling the Secretary at (847) 785-3000.

Participants in Solicitation

The Company and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the Company’s stockholders with respect to the meeting of stockholders that will be held to consider the proposed Merger. Information about the Company’s directors and executive officers and their ownership of the Company’s common stock is set forth in the proxy statement for the Company’s 2012 Annual Meeting of Stockholders, which was filed with the SEC on October 17, 2012. Stockholders may obtain additional information regarding the interests of the Company and its directors and executive officers in the proposed Merger, which may be different than those of the Company’s stockholders generally, by reading the proxy statement and other relevant documents regarding the proposed Merger, when it becomes available. You may obtain free copies of this document as described in the preceding paragraph.

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.

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