Nudged toward drama by a maths teacher who reckoned he had far too much energy, David Ajala joined an afterschool programme at the Anna Scher Theatre in his native Hackney, London, and went on to earn a BA in Acting from the Court Theatre Training Company. The English actor, of Nigerian Yoruba origin, made his film debut in Kidulthood and returned for its sequels Adulthood and Brotherhood, with fu…