The Barking area comprises the east London boroughs of Barking and Dagenham, Havering, Newham, Redbridge and Waltham Forest, together with the Epping Forest and Harlow districts of west Essex. The population is 1.3 million and includes a wide mix of ethnicity and culture. The area comprises 166 churches, 60 of which are set in urban priority area parishes. The Barking area also includes the main site for the 2012 Summer Olympics in London. Initially, the see was suffragan to the Bishop of St Albans – the Diocese of Chelmsford was not created until 1914. The bishops suffragan of Barking have been area bishops since the Chelmsford area scheme was erected in 1983.
Since March 2013, Bishop Trevor Mwamba has been Rector of St Margaret’s Team Ministry and Barking St Patrick’s with Christ Church. He is an Honorary Assistant Bishop in the Diocese of Chelmsford, but not Bishop of Barking.