Student or Learner
I found this from a newspaper:
"In London, scene of so many reverses, a one-man play based on “How to Lose Friends” makes a small splash and transfers to the West End, where Mr. Young replaces the original actor and plays himself. He’s no Olivier, but he holds his own, and so does the play."
"Scene" is countable according to many dictionaries. Could this be a mistake?
vkhu has the right idea.
There is only one London*. It is the singular place where many reverses have taken place.
*The capital of the UK is understood.