The grieving family of murdered Jude Gayle, from West Norwood, are appealing for information to help catch his killer, with a £20,000 reward now being offered.
Three men stood trial at the Old Bailey for murder – and all were found not guilty.
The 30-year-old father was murdered on Sunday, September 2017.
That evening he was preparing a family meal when he drove to a nearby corner shop at the junction of Dunbar Street and Norwood High Street.
On his way back, he was stabbed in an alleyway in Dunelm Grove and found critically injured at 5.39pm by paramedics and London’s Air Ambulance.
He was pronounced dead at the scene an hour later, despite the efforts of an air ambulance doctor.
Jude’s mother, Pett Roach, said: “The past two years have been very difficult for us.
“I have just accepted that Jude will not be coming back from the shop.
“He is gone. No one can bring him back. We are left to pick up the pieces and continue with our lives.
“All I can hope for and all I want is justice, no more, no less.
“I want those responsible for killing my son, convicted and served the maximum penalty.”
His partner, and children’s mother, Rachel Goodchild, said: “Sunday, 24th September, started like any other Sunday but ended so far from anything I thought could ever happen to me.
“That day Jude, my partner, my children’s father, got brutally murdered, leaving me, his beloved daughter and unborn son to face life alone.
“Our daughter speaks daily of Jude wanting, wishing and hoping her reality of her Daddy no longer being with us is just a dream.
“She can’t understand why he is no longer here with us, something I will have to face all over again as our son gets older.
“Through the careless actions of others I’ve been forced into bringing up our children alone and I owe it to them and to the memory of Jude to get justice.
“So I am pleading from the deepest part of me, please if you or anybody you know has any information no matter how big or small, please help with the ongoing investigation.
“We need new, compelling evidence, help us get justice for Jude.”
To give information anonymously contact Crimestoppers on 0800 555 111 or visit crimestoppers-uk.org.