Gower was born in Nottingham, England. He said in the Runescape Documentary (2017) that he first got into programming when he was seven years old. He attended The Becket School and went on to study at Fitzwilliam College, Cambridge. The 2007 Sunday Times Rich List listed Andrew and Paul Gower as the 654th richest entrepreneurs in the UK, worth £113 million. In 2009, the Sunday Times listed them as the 566th richest men, worth an estimated £99 million. The Daily Telegraph also listed Andrew and Paul Gower as the 11th richest young entrepreneurs in the UK.