Interesting to see the differences here.
From an ATC point of view, I can only speak for Heathrow, but we report every go-around.
It doesn't get submitted into our Safety Tracking and Reporting system (ASR equivalent) unless the ATCO in question feels it deserves an MOR or a non-MOR observation, but routine GAs do still get entered by the Tower Supervisor into our GA database; time, callsigns, types (of the one ahead, and the one going around), runway state, day/night, reason, and any other information.
This is used mainly for statistical analysis and trend identification.
For example, a VIR A346 is far more likely to go around than other types, on a pro-rata basis.