The press article suggests the end of all services to London. I had a hunch flights may be switched at some stage to Stansted or Luton but that appears not to be the case now (unless there is a cynical 'response to popular demand' switch up the sleeve to be announced in the next month or two).
WHBM is right about central London not being that important - for those in Herts/Beds/Essex/East Anglia etc and patches of north and east London Plymouth and Cornwall are a very long drive away, the train requires an additional journey into London with underground connections and getting to LGW isn't attractive. There is certainly a market from STN/LTN to be tapped.