JAKEY:
Thank you Dai,I did get a lift home in a Roatrain in the general haulage colour scheme as you photo and it did end in that reg number, but not of the full reg though , although I do know the curtains were pulled fully across the back windows and the cab was immaculate ,but I think he told me it was not his lorry .
By the sound of the description Jakey it probably wasn’t a BRS motor either ! 
Cheers Dennis