If Sir Nicholas Winterton wants to travel up to Macclesfield in a first class carriage he is more than entitled to do so. This is after all a free country and we protect people's liberties. Of course the fact that "They are a totally different type of people" would not entirely endear him to the masses of potential voters who inhabit standard seats, or the future voters running up and down the aisle, who will all still be children when Sir Nicholas retires this year.
Of course some of his other arguments for coming down from Macclesfield do not make a lot of sense, so maybe he really is out of touch. I didn't for example realise that the greater Macclesfield metropolis extended far enough for local councillors to have the option to travel first class between their ward and the council offices. I really must try and stay awake next time I travel through on the train, I've clearly missed vast swathes of Macclesfield, and another mainline station.
He can overcome the being unable to get a seat by that wonderful convenience of a reservation, it is small extra amount he'd have to pay to guarantee the seat of his choosing, then he would "always get a seat" in standard if he wanted. I believe this reservation system has been around almost since the advent of the first steam trains. Wonderful what you can do these days.
As for peace and quiet I believe there is a quiet coach in standard on the Macclesfield to London trains so he could reserve a seat in there if he wishes. Just woe betide him if he starts up him laptop not in quiet mode and the Microsoft ident whistles out around the coach.
Although as I said should he, or any other MP, still be desirous to travel by first class they should be allowed to do so. Buy a standard ticket, and keep the receipt, and then purchase the upgrade that many of he rest of us do if we are a particular long journey.
As I said we live in a free country and the option is there for them to do so, just don't expect us to pick up the tab for that desire to be a class apart.