She was a woman of many names. Also known as ‘Mary O’Connor’, ‘Mary the Shop’, and ‘Mary the Pensioner’, it was the title of ‘Mary John B’ that charmed her the most.

Glaxo Smith Kline vice-president, Bernadette Doyle’s love of science was nurtured in primary school by a nun who taught to learn through discovery, she tells Arlene Harris