Wells Terrace exit to shut
Thu 16 Apr 2015 
Club news item
 

Unfortunately the Wells Terrace entrance to Finsbury Park station will be permanently closed from Mon 20 April 2015 while the station is redesigned. A new Western station entrance will open in early 2018.

Here's a story about it from the Islington Gazette:

http://www.islingtongazette.co.uk/news/anger_over_plans_to_close_finsbury_park_station_entrance_for_more_than_two_years_1_3954506