London, UK -- (MARKET WIRE) -- May 25, 2007 --

Smith & Nephew PLC

25 May 2007

Smith & Nephew PLC - Transaction in Own Shares

Smith & Nephew PLC announces that on 25 May 2007 it purchased 255,000 ordinary
shares of US$0.20 at a price of 613.3193 pence per share. The purchased shares
will be held as treasury shares.

Following the above purchase, Smith & Nephew PLC holds 12,190,000 ordinary
shares in treasury, and has 933,546,043 ordinary shares in issue (excluding
treasury shares).

Paul Chambers
Company Secretary

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