Originally Posted by
Can I help you
There would have been staff or relative/friends off staff travelling on staff travel, oh the joys!
That'd of course be the most likely explanation.
As a lesser possibility, a victim of crushing, as I was on VS.
Many moons ago I ended up flying in one of the jump seats because I was left with about 1/3 of a seat and there was nowhere else but the jump seat to sit.