haamdhanimaid, this has got to be a wind up.
If a customer has the dosh to pay for a premium service seat, he/she can wear what the hell they like. The only time I have ever travelled in a suit is when I have been on a day trip on business and have neither the time nor the packing to get changed at the other end.
If it is not a wind up, it may also come as a suprise that WW1 has finished, very few people have servents and with the exception of parts of Norfolk, it is illegal to send boys up chimneys