55001 (D9001) "ST. PADDY" waits  King's Cross on the 15th March 1977. Classmate 55019 (D9019) "ROYAL HIGHLAND FUSILIER" waits in the adjacent platform with the 1S42 16:00 King's Cross - Edinburgh, "The Talisman", service and it is possible 55001 was working the  15:55 King's Cross - Leeds, "The Leeds Executive", though 55001 would require a further move north later that night to work its next known working the 1E11 08:50 Aberdeen - King's Cross, from Edinburgh on the following morning.