Tamba Momodu was gunned down in the car park of a business park in Telford on October 13 last year.
One year on from the murder and a £10,000 reward is being renewed in a bid to find the people behind the murder at Bridges Business Park, in Bridge Road, Horsehay.
The 20-year-old rapper, who lived in Donnington but grew up in London, died after being shot six times in the head and body.
Despite a major investigation and 24 arrests, no-one has been convicted over his murder.
Earlier this year, the independent charity Crimestoppers offered £10,000 for information that leads to the arrest and conviction of those involved.
Now, one year on, the reward is being renewed and detectives are appealing directly to those with information about who is responsible to come forward.
Senior Investigating Officer, Detective Chief Inspector Mark Bellamy, said his team had made "some really good progress" despite the fact they have failed to charge anyone.
He said: “Twelve months ago Tamba Momodu was fatally shot in the middle of the day in a quiet business park in Horsehay in Telford.
“Over the past 12 months our investigation has made some really good progress, 24 people have been arrested, hours of CCTV has been viewed and our enquiries have led us to Glasgow and the Northolt area of London.
“Despite this, to date, no-one has been convicted of his murder.
"I am absolutely committed to ensuring Tamba’s family have the answers they need and have justice for Tamba, which is why I’m renewing our appeal for information.
“I know there are people out there who have information about Tamba’s murder, I know there are people who know who is responsible and I am appealing directly to those people to come forward and pass that information on to Crimestoppers.
“Crimestoppers is an independent charity, separate from police, and is 100 per cent anonymous. Police will never know the identity of anyone who contacts Crimestoppers.
“If the information they provide leads to the arrest and conviction of Tamba’s killer they could receive £10,000.”
DCI Bellamy added: “I want those with information to think how they would feel if this was their son, brother or nephew. They would want those responsible convicted which is why I need those people who do have information to speak to Crimestoppers.”
An inquest into the death of Mr Momodu, of Summercroft, Donnington, was held earlier this month.
It revealed he was shot six times, and a conclusion of unlawful killing was given.
Call Crimestoppers on 0800 555 111.