“Officers, including firearms officers, and London Ambulance Service are in attendance.”Evacuations have taken place as a precaution. Two people have suffered stab injuries – we await an update on their condition. One person has been arrested. No evidence of any firearms involved in this incident.”It is not being treated as terror related. Officers remain on scene and the incident remains ongoing.”One report suggested there had been a knife fight inside a kitchen in the building. It is not clear how many people were involved at this stage. A man was arrested after two people were stabbed at an office building Sony Music uses as its central London base.Armed police were called to Derry Street in West London at around 11am to a building directly opposite the Daily Mail General Trust headquarters – home to the Daily Mail, Independent, Metro, Evening Standard and i newspaper. Workers were seen being evacuated from the building as armed officers and paramedics went inside.A Scotland Yard spokesman said: “Police were called at approximately 1100hrs on Friday, 2 November to reports of an incident on Derry Street, W8. Offices evacuated in Kensington as armed police respond to incidentCredit:Elliot Wagland / Evening Standard Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings.