On 2013-10-05 14:27:00 +0000, Recliner said:

Stations with an interchange, such as Highbury & Islington in the
north-east and Canada Water in the south-east, became more
important. Each weekday around 60,000 people travel to and from Highbury &
Islington on Overground services.

Indeed Highbury is a busy place but unlike Canada Water it's an old
station that should have been modernised given the key interchange with
the Victoria Line. At present, the down escalator is out of service too.

E.