Five have now been arrested since fatal stabbing in West Kensington flat
Shaftesbury Place
Meanwhile, they have released a photograph of the victim and are continuing to appeal for information.
Police say on Friday 3 November, a 41 year-old man from Lambeth was arrested on suspicion of murder and taken to a north London police station. He has since been bailed to return on a date in November.
On Sunday 5th November, a 39 year-old man from Kensington was arrested on suspicion of murder and remains at a west London police station.
Three other men, aged 48, 56 and 42, who were previously arrested on suspicion of murder have been bailed to return to police later this month.
Officers were called at around 1.45pm on Monday, 30 October to reports of a man found suffering stab injuries at a residential address at Shaftesbury Place on Warwick Road, W14.
The London Ambulance Service attended and the man - later identified as 55 year-old Julian Aubrey - was pronounced dead at the scene.
A post-mortem examination took place at St Georges Hospital Mortuary on Tuesday, 31 October and gave cause of death as multiple stab wounds.
An investigation is being led by the Homicide and Major Crime Command under Detective Chief Inspector Luke Marks.
DCI Luke Marks said: "I am appealing for anyone who was recently in the area of Shaftesbury Place and who may have heard a disturbance coming from one of the flats to contact us.
"We believe that Julian may have been killed at some point in the days prior to the discovery of his body. We need to find out about Julian’s movements and activity in those days, and would urge anyone who had contact with him over the weekend of 28 and 29 October and the days before to contact us right way.
" I would also like to hear from anyone who may know why Julian was targeted in his own home in such a violent way.
"Any piece of information, however small, may prove vital to my investigation."
Anyone with information that could assist the investigation is asked to contact the incident room on 020 8358 0200 or call Crimestoppers anonymously on 0800 555 111. Information can also be tweeted to police @MetCC.
November 10, 2017