Armed police units were deployed to Derry Street and the surrounding area following the incident, while civilians were evacuated to safety.
One person has already been arrested on suspicion of carrying out the attack, which left two people injured — authorities are yet to comment on the severity of their wounds.
"Officers, including firearms officers, and London Ambulance Service are in attendance. Evacuations are in place as precaution. Two people have suffered stab injuries – we await an update on their condition,” the Met said in a statement.
Police also stressed that the incident, which took place at around 11am local time, is not believed to be terror related.
It has since transpired that the altercation was between two members of Sony's catering team, with a spokesperson saying "The incident is now in the hands of the Metropolitan Police."
Something happening in High Street Kensington 👀 locked in the office pic.twitter.com/ve8tKRcdXQ— Laurence (@laurenceknowl) November 2, 2018
Armed police situation taking place in Kensington High Street. Buildings being evacuated pic.twitter.com/CpaUjcIty7— Anthony Baxter (@anthonysbaxter) November 2, 2018