Reconsidering all the original evidence and following new lines of inquiry, police say there is still insufficient evidence to be definitive on the circumstances of Gareth Williams' death.
They say it is theoretically possible for a person to lock themselves in a bag with the sort of lock used.
There is no evidence to support the theory there was a forensic clean of fingerprints
There is no evidence of a third person in the flat
No evidence of forced entry
Police say they have had full support from security services and there is nothing to support the theory that Mr Williams' death was related to his work.
His interest in womens' clothes fuelled much speculation, they say, but the clothing had no bearing on the circumstances of his death.
Officers say Mr Williams was a very private person, who was close to his family and had few close friends. He was concientious and was a decent man with hobbies.
Police explained no evidence has been identified that could establish the full circumstances of Mr Williams' death beyond reasonable doubt.
They say, on balance, their probable conclusion is that no person was present when he died and there is insuffient new evidence to re-open an inquest.
There are no more active lines of inquiry but police say the case will remain under review.