London, UK--(Marketwire - August 20, 2007) -

Smith & Nephew PLC

20 August 2007

Smith & Nephew PLC - Transaction in Own Shares

Smith & Nephew PLC announces that on 20 August 2007 it purchased 400,000
ordinary shares of US$0.20 at a price of 570.0595 pence per share. The purchased
shares will be held as treasury shares.

Following the above purchase, Smith & Nephew PLC holds 31,503,000 ordinary
shares in treasury, and has 914,876,404 ordinary shares in issue (excluding
treasury shares).

Paul Chambers
Company Secretary

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