Engineering work between Salisbury and Andover results in severely reduced traffic. Buses replace trains between Salisbury and Andover, Southampton and Eastleigh. WoE line services run between Exeter and Salisbury, with additional trains to Bristol and Frome via Warminster. The usual GWR Portsmouth/Brighton - Bristol/Cardiff services run as far as Salisbury.
This is a relatively quiet timetable, so I recommend playing on higher difficulties or with a line closure scenario.