Police are keen to speak to a man seen at the apartment where human remains, believed to belong to missing Westminster policeman Gorgon Semple, were found.

They want to trace a man seen at the home of Stefano Brizzi, the man charged with the murder of PC Semple , after detectives investigating the 59-year-old’s disappearance discovered remains of a body on April 7.

The man police want to speak to spent about a minute outside the property of 49-year-old Brizzi on April 1, the date the policeman went missing .

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The police appeal comes after Brizzi, who was charged with murder on April 9, appeared in court on April 11.

Detective Chief Inspector Cliff Lyons, from the Homicide and Major Crime Command, who is leading the investigation, said: “I am keen to trace a man who went to Brizzi’s flat in Southwark Street on Friday, 1 April at about 3pm.

"He was there for only one minute, and did not go inside, but it is incredibly important that we speak to him.

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“If you are that man please come forward and call us on 020 8721 4961. I will treat what you tell me with sensitivity and confidentiality - please get in touch with us I need to talk to you.”

A CCTV still showing the last known sighting of missing police officer Gordon Semple

Following PC Semple’s disappearance, concerned police put out a number of appeals and CCTV images of his last known sightings .

Homicide detectives found the remains after neighbours on the Peabody Estate in Southward Street, Southwark, reported a smell and strange behaviour coming from a property.

Formal identity has yet to take place because of the condition of the remains, but officers believe it to be the missing officer and are treating the death as murder.

A post mortem on the remains was carried out on April 8 and cause of death is at this stage unascertained. A further post mortem has been scheduled for April 13.

Brizzi, from The Peabody Estate, was remanded in custody to appear at the Old Bailey on April 13.