People tend to check in during these times:
When exiting the underground as soon as you enter the elevator. Go to the side. That way you'll be the first to exit!
After a long, hot tube journey, exit via the entry tunnel and gii via the stairwell, you'll be blasted by cold air as the train departs
This station now has wifi!!!
This station has a small ticket hall and is not buggy or pushchair friendly.
Keep clear of the closing lift doors unless you want to be told off!