Upvote:5
This is partly covered on the Oxford Bus Company website. Having tried it today, the map isn't completely correct though...
The bus actually makes 3 stops in the NEC / Airport area. Heading towards Oxford, the first stop is from by the big new Resorts World building, by the lake outside the NEC. The bus doesn't stop at the main entrance, instead it stops at a bay round the back, furthest from the NEC, by the car parks. It leaves here very promptly, so I'm told by the driver who was surprised to find us there!
After that, it heads to the Birmingham International Airport station, via a lot of roundabouts. The stop here is on the airport side (west side) of the station, stand NB which is one of the ones furthest away from the station. That's a busy spot so it won't stop for long, make sure you're there in plenty of time too.
Finally, it goes round the corner to the Airport itself, and stops at Stand L, on your far left as you leave arrivals.
This map from the website has stops marked in approximately the right place, but it's a bit vague, and not quite accurate enough to find your stop easily, especially at Resorts World...