London, UK--(Marketwire - July 18, 2007) - 18 July 2007

Transaction in own shares.

Smith & Nephew plc announces that on 18 July 2007 it purchased 600,000 ordinary shares of US$0.20 each at a price of 616.9984 pence per share. The purchased shares will be held as treasury shares.

Following the above purchase, Smith & Nephew plc holds 25,533,000 ordinary shares in treasury, and has 920,737,684 ordinary shares in issue (excluding treasury shares).

Paul Chambers
Company Secretary

                      This information is provided by RNS
            The company news service from the London Stock Exchange