I recently booked return flights on Finnair "Business Class" from BNE-LHR through the Finnair website. After a few weeks I looked at each leg (BNE-SIN, SIN-HEL, HEL-LHR) for seating preferences and discovered the leg from BNE-SIN and return were in economy. After complaining to their Aussie office and through their website they explained that when booking a banner is displayed indicating some flights may not be available in business but the next available class would be used. I had incorrectly assumed that would be the smaller flight from HEL-LHR. I admit that I should have checked but to advertise a Business Class flight where 35% (one way) is in economy I think is really poor. What exactly is a "Business Class" flight?