.... that's a huge clue that someone's reserved it?
Two trips to London in the past 2 days and for 3 of the four journeys we booked seats.
On all 3 occasions, someone was sitting in the seats.
And you know, I wouldn't mind so much but on all 3 occasions the people in the seats rolled their eyes, tutted, huffed and puffed and made a great show of having to move seats in a way that made it clear that WE were being incredibly unreasonable to expect to sit in the seats WE had paid for!
One woman in particular was very put out and spent the remainder of the journey casting dirty looks our way. Her and her companion had clearly been in the seats for a while, since the table was covered with litter. There were plenty of unreserved seats nearby.
Honestly, I started to wonder if there's some sort of etiquette I don't know about. Like "If you don't manage to sit in your seat before someone else then tough shit" or something?