 Jackson was consecrated as a bishop on 14 May 2014 at Westminster Abbey by Justin Welby, Archbishop of Canterbury.Since then, he has served as Bishop of Lewes, a suffragan bishop in the Diocese of Chichester.It was announced on 3 September 2019 that Jackson was to become the next Bishop of Hereford; he was elected to that See on 6 December 2019 and his election confirmed 7 January 2020.