Complex sentence: The Labour council supports an extension to Reading but the Conservative MP for Reading East, Rob Wilson, has expressed concerns that Crossrail trains (which will call at every station) will actually be slower than the present Reading-Paddington service.
Split into simpler sentences: The Labour council supports an extension to Reading but the Conservative MP for Reading East, Rob Wilson, is less enthusiastic. His concern is that the Crossrail trains (which will call at every station) will actually be slower than the present Reading-Paddington service.