Ye we flew over with Qantas from London to Bangkok. I think it was 14 hours. They let us on the plane at the front and we had to walk through all the first class/business class seats before finally getting to the end of the plane to the economy seats. I swear they only do it to show yuo what ur missing in the hope you'll upgrade!
Even during the pre-flight they're like "...inflatable lifejacket located under ur seat...or if ur in business class, its located at the side of your luxury electronic reclining seat, next to your free champagne dispenser, under the call button for ur personal masseuse, just passed ur free chocolate and ice cream bar....not to be confused with the regualr bar with free beer and cocktails and champagne. To inflate the lifejacket...."!
We also flew BA from bangkok to Sydney. think that was 14 hours as well, or maybe 8 hours. cant remember. wasnt as good as qantas. but they did the same thing with the 1st class walk thru....bastards!