Wonder if anybody's actually bought a first-class ticket for a journey of four minutes? Hmm, wonder what you get - a leggy blond waitress serving you tea and lots of crumpet, and what do you get for the other three minutes??
There were times in the not too distant past when some companies would only buy 1st class rail fares for business travel. Some managers were very insistent on it, fearing it was a case of 'use it or lose it'.
The most ridiculous case I heard of was a friend of mine who worked for a large multinational on a graduate scheme. Travel policy dictated that even travel from the airport to your home had to be booked by the company, not reclaimed. This person lived a 2-minute walk from Kingston upon Thames station.
He was returning from a business trip from the US, flying into Gatwick. As it's an easy train journey, he asked them to book train tickets for the return. As the travel book couldn't find a first class fare to Kingston (no surprise there), he was booked to Surbiton, with a taxi booked to wait for him there to take him home. Yup, they wouldn't let him travel on a standard-only train on business.