Complex sentence: During this time Bradshaw was working in non-professional theatre in his home town, having also been a talented boy soprano for his local Church, St. John's Church, Boxmoor, even going on local tours.
Split into simpler sentences: During this time he was working in non-professional theatre in his home town. He had also been a talented boy soprano for his local Church, St. John's Church, Boxmoor, even going on local tours.