I went unaccompanied minor on BA once (I'm pretty sure it didn't cost money in those days). I was 15 and would have been fine without, but it turned out to be

I went unaccompanied minor on BA once (I'm pretty sure it didn't cost money in those days). I was 15 and would have been fine without, but it turned out to be a great way to skip the queue at immigration at Sheremetyevo.