Supplementary Reporting Announcement

Shire plc (LSE: SHP, NASDAQ: SHPGY), the global specialty biopharmaceutical company, in accordance with the requirements of Rule 4.1 of the Disclosure and Transparency Rules of the UK Financial Services Authority, releases as an Appendix to this announcement a business review for the year ended December 31, 2009, a description of principal risks and uncertainties affecting Shire and the directors’ responsibility statement.

Shire has previously announced un-audited full year results for the year ended December 31, 2009, prepared in accordance with US generally accepted accounting principles, on February 19, 2010.

Tony Guthrie
Deputy Company Secretary

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Notes to editors

SHIRE PLC

Shire’s strategic goal is to become the leading specialty biopharmaceutical company that focuses on meeting the needs of the specialist physician.  Shire focuses its business on attention deficit hyperactivity disorder (ADHD), human genetic therapies (HGT) and gastrointestinal (GI) diseases as well as opportunities in other therapeutic areas to the extent they arise through acquisitions.  Shire’s in-licensing, merger and acquisition efforts are focused on products in specialist markets with strong intellectual property protection and global rights.  Shire believes that a carefully selected and balanced portfolio of products with strategically aligned and relatively small-scale sales forces will deliver strong results.

For further information on Shire, please visit the Company’s website: www.shire.com.

THE “SAFE HARBOR” STATEMENT UNDER THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995

Statements included herein that are not historical facts are forward-looking statements. Such forward-looking statements involve a number of risks and uncertainties and are subject to change at any time. In the event such risks or uncertainties materialize, Shire’s results could be materially adversely affected. The risks and uncertainties include, but are not limited to, risks associated with: the inherent uncertainty of research, development, approval, reimbursement, manufacturing and commercialization of the Shire’s Specialty Pharmaceutical and Human Genetic Therapies products, as well as the ability to secure and integrate new products for commercialization and/or development; government regulation of Shire’s products; Shire’s ability to manufacture its products in sufficient quantities to meet demand; the impact of competitive therapies on Shire’s products; Shire’s ability to register, maintain and enforce patents and other intellectual property rights relating to its products; Shire’s ability to obtain and maintain government and other third-party reimbursement for its products; and other risks and uncertainties detailed from time to time in Shire’s filings with the Securities and Exchange Commission.

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