Complex sentence: All 2500-36 were built in 1934 at Derby Works, but from 1935 the LMS switched to constructing a very similar, simpler, 2-cylindered design.
Split into simpler sentences: All 2500-36 were built in 1934 at Derby Works. From 1935 the LMS switched to constructing a very similar, simpler, 2-cylindered design.