Complex sentence: His first post was a curacy at Stalybridge, after which he was the Chaplain at Basle from 1992 until 1998.After this he was the incumbent at Heswall from 1998 until his elevation to the episcopate.
Split into simpler sentences: His first post was a curacy at Stalybridge, after which he was the Chaplain at Basle from 1992 until 1998. He was then the incumbent at Heswall from 1998 until his elevation to the episcopate.