London, UK -- (MARKET WIRE) -- March 22, 2007 --

22 March 2007


Transaction in own shares.


Smith & Nephew plc announces that on 22 March 2007 it purchased 720,000 ordinary
shares of US$0.20 each at a price of 641.8798 pence per share. The purchased
shares will be held as treasury shares.

Following the above purchase, Smith & Nephew plc holds 4,280,000 ordinary shares
in treasury, and has 940,822,992 ordinary shares in issue (excluding treasury
shares).

Paul Chambers
Company Secretary


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