Officers and police cadets will be in the area from around 6pm on Wednesday (February 3) handing out leaflets and appealing for information, one week after Mr Dulai was stabbed in Rosedale Park , off Albion Road.
The murder investigation was launched after police were called by the London Ambulance Service at around 6.40pm on Wednesday January 27 to reports of a man stabbed by the tennis courts in Rosedale Park, Hayes .
Officers attended and found 44-year-old Harjit Singh Dulai, who lived in Uxbridge , suffering from a stab wound
He was taken by LAS to a central London hospital where he was pronounced dead at 8.30pm.
So far, six people have been arrested on suspicion of murder as part of the investigation.
Four men, aged 20, 29, 28, and 39, have been bailed to return to a police station on a date in late February pending further enquiries.
A fifth man, aged 39, has been released with no further action.
A post-mortem examination held on Friday January 29 gave the cause of death as a stab wound.
A 16-year-old boy, was arrested on Sunday, 31 January and subsequently charged with the murder .
'Invaluable to our investigation'
Detectives from the Homicide and Major Crime Command are investigating and would like to speak to anyone who is yet to contact officers.
Detective Chief Inspector Noel McHugh, said: "I am urging anyone who witnessed Harjit's murder or the moments leading up to it to speak with officers.
"Although a teenage boy has been charged with murder, any piece of information, no matter how small, could prove invaluable to our investigation.
"Please contact the incident room and let us know what you saw, or what you have since heard about that evening."
Officers are also keen to find the knife used in the attack and would like to hear from anyone who may have seen or picked up anything in or around the area in the last week.
Anyone with information can call the incident room on 020 8785 8099 or Crimestoppers anonymously on 0800 555111 or on their website .