I must, hand on heart, prior to my retirement, admit to have been a senior member of the top management at our consultancy who travelled first-class on railway lines where this was afforded.We also had an account with a company that offered the use of chauffeur-driven limousine fleet cars to areas that had no rail service.
I remember once travelling on a first advance (with my director) on the wrong train, on GNER as it then was. Thankfully we weren't questioned.