A bogus police officer facing trial for the murder of a man during a sex bondage session said he has no memory of the night.

Convicted killer Jason Marshall, is accused of an alleged attack on computer repairman Peter Fasoli, 58, who lived alone in a one-bedroom bungalow in Northolt.

He told jurors he felt "very bad that somebody died and it could potentially be me."

The 28-year-old met the victim through gay dating website Badoo and posed as a policeman during the alleged attack in January 2013, when he also stole hundreds of pounds.

Jurors at the Old Bailey saw disturbing video footage recorded on Mr Fasoli's computer which showed how the victim was tied up, gagged and smothered in his own home before it was set on fire, the court heard.

Marshall, had been convicted of murder and attempted murder of two other men in Italy, and sent back to Britain earlier this year charged with Mr Fasoli's murder.

In the years after Mr Fasoli's death which was put down to an accident his nephew stumbled across footage of the violent death on a hard drive.

Giving evidence, Marshall told jurors he had no memory of the events in Italy or meeting Mr Fasoli, although he accepted the man in the video was "without doubt" him.

Marshall who had previously worked at a jeweller's in Hatton Garden and as a street cleaner for the London Olympics, said: "Seeing the footage, I feel bad that somebody died and it could potentially be me.

"If somebody died at my hands it's difficult to deal with mentally."

Marshall told the court he had a troubled upbringing by heroin addict parents, had spent time in care and been sectioned in 2008.

He had also been in prison in 2011.

The defendant also told the court he had been diagnosed with Asperger's syndrome, epilepsy, a personality disorder and depression.

He had also joined gay escort advertising S&M services on websites such as Grindr to make more money.

At the age of 17, Marshall said he believed he was an "alien from another planet" and an "archangel" when he tried to jump off the car park at Stratford shopping centre in east London.

Marshall also said he was arrested "many, many times" for impersonating a police officer and had walked into police stations in Southwark and Kentish Town and signed out radios.

He also dressed up as a ticket inspector and air cadet.

Asked why he did it, he said he did not like his "personal image" and liked the "respect" the uniform gave him.

Following Mr Fasoli's death, the defendant fled to Italy and within weeks murdered 67-year-old Vincenzo Iale in his flat strangling him with an electrical flex, prosecutor Edward Brown QC told jurors.

The victim also had his car and money stolen from his bank account, the court heard.

He was convicted by an Italian court of Mr Iale's murder.

Another man, Umberto Gismondi, 54, also with a flat in Rome invited Marshall posing as "Gabriel" and they arranged to meet for sex through Badoo.

The victim was also bound, gagged and attacked but escaped after alerting his neighbours.

Marshall fled the scene but was later arrested jurors were told.

He was found guilty in July 2014 of the attempted murder of Mr Gismondi, possession of a truncheon, and using violence to get his bank cards and 400 euro.

British and Italian police liaised to bring Marshall back to the UK and he was flown back to Heathrow Airport in custody in February this year.

He was arrested on suspicion of murder and charged the same day.

Jurors were told an initial investigation into the fire at Mr Fasoli's flat found it started on his bed and was most likely due to a faulty light.

Mr Brown told jurors the evidence was consistent with the fire being started with a cigarette lighter.

An inquest in August 2013 - before the video was uncovered - recorded a verdict of accidental death.

Marshall, of East Ham, east London, denies murder.

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