Flew LGW to GLA and back this week with BA. Had booked through the travel agent my company uses. Checked in online for both flights and could have chosen a different seat but decided to stick with the one I had been allocated. Interestingly, the only seats I could change to were towards the rear of the plane and I could not select any of the seats towarst the front, so I assumed they were already full. When i got on board i found I had row 3 to myself and rows 1, 2 and 4 were all completely empty too!
On a different note I don't recall anyone at Gatwick looking at my photo ID and I am certain that no one at GLA looked at it because it was tucked away in my laptop bag and I didn't have to go hunting for it.... How did they know I was me? I did have my picture taken as I went through security at LGW but would they have had that at GLA for the return flight?