Josh Hanson, 21, from Kingsbury, died on 11 October 2015 after suffering a serious wound to his neck, in the early hours near a bar in Field End Road.
His family will celebrate his life by staging a football tournament in his memory next month, as they also aim to raise awareness of knife related crime.
His mum Tracy Hanson has previously described how “every day is a living nightmare and no one deserves to go through this”.
Her justice for Josh Hanson Facebook page has attracted tens of thousands of followers. See page at bottom of article.
Nick Downing, Hillingdon's Detective Chief Superintendent at the time of the murder, described it as a “tragic and senseless death”.
A £20,000 reward has been offered for information on Shane O'Brien, who police want to speak to regarding their investigation.
On Sunday 3 September, the Josh Hanson Trust will be holding its second Memorial Football Tournament and Family Fun Day.
His family, who have organised the event, said: “The event with the support of the Lottery Fund, SQS and our hosts Hendon Football Club is to help raise awareness to our Justice For Josh Hanson campaign and to raise awareness of knife crime and knife crime prevention while trying to find positive solutions.
“This is also a great opportunity to bring the community together while we celebrate Josh's life."
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Pictured below - last year's football tournament
— JusticeForJoshHanson (@JusticeForJoshH) 2 August 2017
Organisers said: “Last year's success was down to everyone who took part in our day. Sixty of Josh's friends took part in the tournament with the trophy going to Aston Rowe who played an outstanding game of football. Our family, friends and volunteers along with the public, government agencies and our sponsors made our day a truly memorable one.
“We hope that this year will be just as memorable and like last year we will have lots of activities for all of the family to get involved in.
“There will be various stands including, information stalls, creative workshops, face painting, BBQ and tombola along with penalty shoot out, tug of war, and egg and spoon race.”
- Police Appeal
Mr O'Brien has previously been reported by police to have links to the Ruislip area. See picture below.
He has been added to the most wanted list by Crimestoppers and the National Crime Agency.
The murder investigation has gained nationwide coverage, having been featured on the BBC Crimewatch show. If you have any information call Crimestoppers anonymously on 0800 555 111.