Yes, she remembers it very well, a once in a lifetime moment.It must have been an impressive sight - she clearly has good memories of it
This point that Stuart Taylor makes about the Royal train had me puzzled. I couldn't understand why, if your going to send the train ECS along the loop line, you would take it to Accrington. Harwood had its own carriage shed... Then I remembered reading that circa 1953, two years before, the shed here was effectively closed down, and unstaffed.14 April: left Poulton with 2 x Black 5s via Bolton to Darwen. Royal party alighted, ECS to Accrington. An unidentified Austerity 2-8-0 took over for ECS move to Colne via Rose Grove. Train arrived Colne at 11.30am and was stabled outside the carriage shed.
Given the above, it seems going east from Blackburn, Accrington shed was the closest until you get to Colne itself. So why not then straight to Colne? I think that although you would know how long it takes a train to move from point A to B, you don't know how long the cleaning would take. BR's view was probably to get the train cleaned / Royal staff clean it first, then worry about getting it to Colne?
Once cleaned at Accrington, why would send it back 4 miles to Gt. Harwood junction for the loop line? Why not continue on the EL line to Colne? Traffic reasons?
Are there any photos of the Royal train from April 1955?