Complex sentence: Between 1851 and 1867 he designed or rebuilt about 36 new churches, almost all of them for the Church of England, with a small number for Congregationalists and Roman Catholics.
Split into simpler sentences: Between 1851 and 1867 he designed or rebuilt about 36 new churches. Almost all of them were for the Church of England, with a small number for Congregationalists and Roman Catholics.