Waiting for the train can be a task in itself whether you've arrived too early and keep looking up at the board hoping your platform has been announced so you can take a seat and drop your bags, or whether you've arrived just in the nick of time as you step on board with the doors closing straight behind you.
And when it comes to rush hour, especially after a long day at work, the last thing you need is a busy carriage full of people scrambling to find the next available seat, leaving you to stand.
Whilst none of these scenarios are ideal, neither is blocking fellow passengers from boarding so your group can find a seat easily. But unfortunately, this is the tactic one passenger recently took, much to the annoyance of another traveller.