I was looking at flights to Africa later in the year and found BRU - NBO, ZNZ - LHR for £1,600 in J. Thought it was a decent fare, but wondered about using some Avios by booking one leg in Y and then UUA to J.

From my novice perspective it isn't obvious how to tell if UUA is available and what it will cost. I know that for BA there is a table showing upgrade rates and there are web sites showing UUA availability. Does anything similar exist for QR?