Complex sentence: Beccles still retains its disused island platform, which will be restored and track relaid so that trains may pass each other, thus allowing hourly departures from Lowestoft rather than the present two-hourly services.
Split into simpler sentences: Beccles still retains its disused island platform which will be restored and track relaid to allow trains to pass each other. Thus meaning hourly departures from Lowestoft rather than the present 2 hourly services.