Back from OSL on the last BA flight on Monday in Y.
One of the Qatar wet leases.
Crew were great even if they seemed a bit bemused by the whole situation.
Flight was showing as no seats available when I tried to book the day before (but some availability on the earlier 1700ish flight) but we had a few empty seats.
Food served (warm mushroom pastry and a mini Danish) as well as drinks.
Several very bemused passengers who asked repeatedly if they were on the right plane and if it was going to London.
No mention prior to getting to the gate that it was a Qatar plane.
Sorry if this duplicates other posts - not read the whole thread and on my phone.
I suspect no seats were available due to the lower number of seats which could have pushed them into a risk of being oversold if a few flex ticket passengers wanted to change flights.
TE