The Australian has been holed up inside the building for more than two years. He attended the press conference alongside Ecuadorian Foreign Minister Ricardo Patino at the building in Knightsbridge.
"I am leaving the embassy soon - but perhaps not for the reasons the Murdoch press and Sky News are saying at the moment", said Assange. Allegedly, Assange is suffering from heart and lung problems. However, the 43-year-old denied he was leaving the embassy for health reasons, said a BBC report.
"Being detained in various ways in this country without charge for four years and in this embassy for two years which has no outside area, therefore no sunlight ... it is an environment in which any healthy person would find themselves soon enough with certain difficulties", he said.
Assange is facing sexual assault charges in Sweden, alleged by two women. However, he denies the allegations and sought refuge in the Ecuadorean embassy in June 2012.
Assange grabbed headlines across the world after Wikileaks published classified US military documents on the Afghan and Iraq wars.