The father of a man who died at Michael Barrymore's home nine years ago has said he hoped the anniversary might prompt someone to come forward.
Stuart Lubbock, 31, was found dead at the entertainer's former property in Roydon, Essex, in 2001.
No-one has been charged over his death and police said they believed someone knows what happened.
Terry Lubbock, of Harlow, said: "The only way anything is going to happen now is if somebody comes forward."
Post-mortem tests showed Mr Lubbock had suffered severe internal injuries which indicated sexual assault. His bloodstream contained ecstasy, cocaine and alcohol.
In 2002, a coroner recorded an open verdict into his death.
Mr Barrymore and two other men were arrested on suspicion of sexual assault and murder in 2007 but were subsequently released without charge.
Mr Lubbock told BBC Essex: "The only way that anything is going to happen now is if somebody comes forward.
"I just can't see that. There is just a glimmer - a very small glimmer of light that somebody would come forward.
"That would mean so much to me. My life, it's not even been on hold, my life has gone backwards. It has been nine years and this thing just goes on and on and on."
Essex Police said: "Police remain completely committed to doing everything to establish how Stuart died and how he received his injuries. A new investigation began in 2006 and remains ongoing.
"We are convinced that somebody knows exactly what happened to Stuart, but so far they have not shared this information with us."