Сент-Джонстон
Born Aldrina Nia Vaughan in south London, St Johnston was educated at Selhurst Grammar School for Girl before leaving school at 16 or 17 (accounts vary) to work for the British Non-Ferrous Metals Research Association. St Johnston worked and studied part-time, studying at Croydon Polytechnic and later Sir John Cass College before gaining an external London University degree in Mathematics.