[rwmj]

Not really. Apparently it is the 5th busiest airport in the London area with 4.5 million passengers (2017) according to Wikipedia. Compared to 61 million for Heathrow.

It's a peculiar airport in general because it's right in the middle of the old docklands on a bit of reclaimed land and only relatively small jets can land there. Unlike the other London airports which are all miles outside central London and serve all sizes of planes.

Fun fact - it's the only major airport in the world that doesn't have a control tower on site (to save space). It is remote controlled from 80 miles away.

https://en.wikipedia.org/wiki/London_City_Airport

[throwawaymobule]

It's also a pretty good setup for flying a plane with a light load of fuel over to Shannon where the passangers can do US immigration checks while the same plane gets fully fueled. I think BA used to do this.