Detectives are appealing for information and witnesses to an aggravated burglary in Kilburn.
Police were called at 20:50hrs on Wednesday, 11 May to reports of four men forcing entry to a residential property on Tubbs Road, NW10.
Armed with knives, baseball bats and a cricket bat, the men forced entry to the 45-year-old man's flat before assaulting him.
The London Ambulance Service was called and the man was taken to a north London hospital with stab injuries. He has since been discharged.
The suspects fled the flat prior to police arrival, jumping over a garden wall into the rear of a neighbouring property, before running towards Station Parade and Tubbs Road.
The suspects are all described as black males. They wore balaclavas and spoke with London accents.
Police are appealing to anyone in the area who may have seen or heard anything or have knowledge of this incident to contact them.
Anyone with information should call Wembley CID on 020 8733 3737 or via 101. Alternatively, to remain anonymous call Crimestoppers on 0800 555 111.