With searching for locos that where at Bristol on the 24 Feb 1977, I came across some notebooks at this website below at Newton Abbott by Steve Marshall.
http://www.rail-dvd.co.uk/page_2565608.html
1960s - 1980s Notebooks 55 Years of Railway Interest, by Steve Marshall.
In the section Book 5: (in full) 6 December 1975 - 17 March 1977 and in photocopy ZZ5-121. There are some hyroglifics. On the 24 Feb 1977 Newton Abbott entry, 50004 has 1340PDPZ above the loco number. I presume this means 1330 Paddington- Penzance. My question is, if this is correct, what does 1040LDPG mean above 45026.
regards
Albert