There are no plans to carry out any further tests of this type, but enquiries continue to try and establish a formal cause of death.
Mr. Williams’ death remains suspicious and unexplained and enquiries into the circumstances continue.
Officers from the Homicide and Serious Crime Command investigating the death have today, Thursday 28 October, reiterated their appeals for information to identify a man and woman let into the communal front door of his address.
They are described as of Mediterranean appearance, aged between 20-30 years-old, and called at 36 Alderney Street late one evening in June or July, prior to Mr Williams’ death.
The police are still keen for the couple to come forward, or receive any information regarding them from members of the public.
Gareth Williams’ body was found in his flat at Flat 4, 36 Alderney Street, Pimlico, SW1 on 23 August by uniformed officers. There was no sign of any forced entry to the property, and no signs of disturbance inside.
Mr. Williams was found unclothed, in a zipped and padlocked red North Face holdall which was in an empty bath in the en suite bathroom.