did it happen since class 373 exist?
did GNER operate them to another destination except of Leeds?
does anybody have photos which can confirm it (Glasgow? Edinburgh? Newcastle? York? somthing?)
The people on the platform (sat down) were more interested in the diesel behind (Royal Army Ordnance Corps IIRC...I think it was the standby for Scarborough excursions?) and the other person wandering down the platform is one of my friends! The set was 3305/6.
They definitely went to York while Leeds was being refurbished. They made it Newcastle on test but were found to be too long for corners and there was a risk of them sticking out too far and hitting trains on the other line.