Watts is a loyal fan of Leicester Tigers rugby club, the county cricket side and even hard-pressed Leicester City. He took a physics degree at Leeds and, three weeks later, left for two years' teaching in Sierra Leone with his wife, Jan, returning to Leeds for a Masters in geophysics, which led him to Shell. He has two children - Sarah, a mother of three, and Jonathan, who works in IT. At home, he likes working on his new Japanese garden - 'very therapeutic'.