Can we draw the following hypothesis from the context? 

Context:

Jeremy Brock MBE (born 1959) is an English writer and director whose works include the screenplays "Mrs Brown", "Driving Lessons", "The Last King of Scotland", "Charlotte Gray", and "The Eagle". Brock has also written two plays for the Hampstead downstairs theatre.

Hypothesis: The Hampstead theatre ran Brock's plays for many years.
It's impossible to say