Note the oil drum left in the 6 foot by the PW team. There are 13 coaches on the train, I am unsure if it is the 1F10 or IE10 . 1E10 was a Harrogate/Leeds to Kings Cross working due at 16.38 - highly unlikely to be Brush Type 2 working throughout but it is just plausible that D5604 could have worked this from Grantham or more likely Peterborough (it was a Finsbury Park loco). The other possibility is 1F10, the F indicating “Special train to the East Coast main line (not traversing LMR lines) “