An earlier gander at your website revealed the photo montage by Roger Salter and Roger Winnen in respect of the problems at Long Rock depot this morning. (21st August 2018)
Your site also stated that the I.E.T. units (800017/029) which formed today’s 1C04 service out of London Paddington then failed and were replaced by an HST set at Bristol Temple Meads.
In fact, my ‘spy’ at GWR advises me that there was nothing wrong with these I.E.T. units! The HST set that worked 1C04 forward from Bristol Temple Meads to Penzance was standing spare at St Philip’s Marsh HSTD before being requisitioned for 1C04! Passengers were transferred to the HST at Bristol Temple Meads. The I.E.T’s then worked e.c.s. as 5L46 to Bristol Parkway. Their diagram below, courtesy of our SW-SWRG gen group. The two I.E.T’s were then used to form the 10:33 off Bristol Parkway to London Paddington (nominally the 09:55 ex-Cardiff Central). The latter was cancelled between Cardiff Central and Bristol Parkway. My contact does not currently know why the 800’s were sent out vice the 802’s, and the fact that the 800’s have smaller fuel tanks than the 802’s *might* be a factor in what developed, as it would clearly affect their range in respect of Penzance diagrams.
In either case it was not a good experience for many passengers on that service.
All best wishes from Mike Hunt, and I hope this throws a bit more light on today’s events.
The actual diagram for 800017 800029
1C04 07:30 Paddington to Bristol TM
5L46 09:25 Bristol TM to Bristol Parkway
1L46 10:33 Bristol Parkway to Paddington
1C14 12:30 Paddington to Bristol TM
1A22 15:00 Bristol TM to Paddington
1B63 17:15 Paddington to Carmarthen
Once again many thanks Mike