Complex sentence: London Transport's new management aimed to move away from goods services to concentrate on passenger services; as the line served a very lightly populated rural area, the new management believed it very unlikely that it could ever be made viable.
Split into simpler sentences: London Transport's new management aimed to move away from goods services to concentrate on passenger services. As the line served a very lightly populated rural area, the new management believed it very unlikely that it could ever be made viable.