The late Jon Woods
As a matter of interest, the 55 x kept on at Penzance until Sept 1962 were 5508, 5537, 5545 and 5562.
Many thanks to Roy Hart - for this information - received within minutes of publishing. Updates at 04.55 25th May 2021.
Also I understand that from Monday 24th May class 387 EMUs will be working services West of Swindon (to Bristol Parkway) covering for class 800 IETs out of service for inspection / repairs.