20:04 Plymouth to London Paddington due 00:05 will be terminated at Exeter St Davids.
It will no longer call at Tiverton Parkway, Taunton, Westbury, Chippenham, Swindon, Didcot Parkway, Reading and London Paddington.
This is due to a shortage of train drivers.
17:31 Penzance to London Paddington due 23:28 will be terminated at Exeter St Davids.
It will no longer call at Tiverton Parkway, Taunton, Castle Cary, Westbury, Pewsey, Newbury, Reading and London Paddington.
This is due to a shortage of train managers.
Strikes me you have one complete crew there ... so perhaps we'll see a train re-instated?