Complex sentence: Elizabeth Sparrow is only the fourth female from the list of Presidents of the British Computer Society, now known as the BCS, The Chartered Institute for IT, and is an author and consultant, specializing in outsourcing relationships and change management programmes.
Split into simpler sentences: Elizabeth Sparrow is a former president of the British Computer Society (BCS, The Chartered Institute for IT). She is an author and consultant, specializing in outsourcing relationships and change management programmes.