South32 Ltd - Perth-based diversified mining group - Appoints Sharon Warburton as a non-executive director with immediate effect. Says it chooses Warburton following a search to identify a director with ‘strong skills and leadership’ experience in commercial, accounting and finance, risk management and governance. She is a non-executive director with Northern Star Resources Ltd, Wesfarmers Ltd and Worley Ltd and serves on a number of unlisted boards.

Current London stock price: 161.2 pence

12-month change: down 28%

Current Johannesburg stock price: R 38.27, down 0.8% on Tuesday

12-month change: down 18%

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