Complex sentence: After this he was Principal of Clergy House, Wimbledon until 1909 and then of the Diocesan High School for Europeans in Rangoon until 1914 when he became Vicar of Broadstone, Dorset.
Split into simpler sentences: After this he was Principal of Clergy House, Wimbledon until 1909. He then held a similar post at the Diocesan High School for Europeans in Rangoon until 1914 when he became Vicar of Broadstone, Dorset.