A service will be held to mark a year since the death of Mark Duggan, the father of four who was shot dead by police before the London riots.
A year and a day after his death in Tottenham, north London, members of his family are expected to attend a service of hope in memory of him.
The event at Tottenham Town Hall comes after Mr Duggan's mother, Pam, made a fresh plea for justice for the family.
Mrs Duggan, whose son was shot in the torso by Metropolitan Police as they swooped on a car he was travelling in, said: "The past 12 months have been terrible.
"We still have no answers about why my son died, people need to be held to account for my son's death.
There needs to be a full inquest, infront of a jury of ordinary men and women, to find out the truth."
The police watchdog the Independent Police Complaints Commission (IPCC) is compiling a report that will be passed to a coroner in the autumn.
London mayor Boris Johnson said of the anniversary: "It's an important time to remember what happened.
"There is a commemoration taking place and I think it will be observed as it should be, in a proper and dignified way."