Jurors have heard the harrowing screams of a man being stabbed to death during sex with a porn star accused of killing him and his lover in a plot to steal their money.

Colombian national Yostin Andres Mosquera, 35, is on trial over two deaths in Shepherd’s Bush, west London – and is said to have left body parts in suitcases at the iconic Clifton Suspension Bridge in Bristol.

In the footage played at Mosquera’s Old Bailey trial today, Mr Alfonso, 65, is heard attempting to fight him off but is unable to do so before losing consciousness.

Mosquera was then heard singing as he put the body of Mr Alfonso on plastic sheeting before immediately going to the computer in the bedroom of the home in Shepherd’s Bush, west London, shared by the victim and his partner Paul Longworth.

Prosecutors say Mr Longworth, 71, had likely already been killed by Mosquera with hammer blows to the back of the head before the sex session, the Old Bailey heard.

Porn actor Mosquera then cut up the bodies and put the dismembered heads of Mr Alfonso and Mr Longworth into a chest freezer.

Other parts of their bodies were found in two suitcases on Clifton Suspension Bridge on July 10.

The footage of the killing was deemed too grisly for the jury and they heard only the audio track as a police officer gave a description of the film.

Mosquera had been staying at the couple’s home on Scotts Road, Shepherd’s Bush, west London, where the couple’s decapitated heads were found.

Today jurors heard evidence from PC Nick Swire of the Major Investigations Team, who spoke of the ‘frenzied stabbing’ and described the moments in which Mr Alfonso lost his life.

In film, Mosquera could be seen holding a knife to Mr Alfonso’s chest and stabbing him, the Old Bailey was told.

Prosecutor Deanna Heer, KC said: ‘They then fall onto the floor where Mr Mosquera is able to get on top of Mr Aalfonso, Mosquera is heard to shout in English, “You like it?”

‘Mr Mosquera is seen to stab him multiple times in the chest area.’

PC Swire told the court: ‘From my view, I see the right hand of Mosquera applying the knife to the throat area of Mr Alfonso, and blood is seen to flow down the chest, this is the point of incision.’

The grappling then followed, in which Mosquera is said to have been seen stabbing his victim several further times, as Mr Alfonso continues to scream.

The officer described Mosquera cutting Mr Alfonso in an ‘almost sawing motion to the chest area’.

Mr Alfonso’s body can be seen going limp on the floor, when Mosquera begins to sing and dance – before placing Mr Alfonso on a plastic sheet, then heading straight to the computer in the bedroom.

Ms Heer asked PC Swire: ‘Do you hear a change in the sound of his (Mr Alfonso’s) breathing from this point on?’

The officer replied: ‘Yes. His body goes limp, he loses consciousness.’

Mr Alfonso was said to have a ‘predilection for extreme sex’, which he filmed and posted on a porn site, where Mosquera also posted videos under the name ‘I am black master’.

Mosquera had been invited to the UK to go sightseeing and the couple had also holidayed with him in Colombia. 

Mr Longworth was Irish and Mr Alfonso was originally from France but had obtained British citizenship.

Jurors were also today told that webcam footage taken at 10.50pm on the day of the killing shows Mosquera pressing buttons on the webcam and it turning off.

The webcam is later switched back on with footage showing Mosquera, now dressed in trousers and a black jacket, searching in Mr Alfonso’s desk drawers before using a phone he picks up.

CCTV footage shows Mosquera then leaving the flat and heading towards an alleyway, the court heard – with Ms Heer saying there was evidence he used a cashpoint at that time.

Webcam footage shows him returning to the computer desk, removing a wad of money from his pocket before being heard counting the notes off camera, the court was told.

CCTV footage from the next day showed a van arriving at the flat, with two men then getting a chest freezer out of the van and carry it into the property in Scotts Road.

Fil m then showed Mosquera going to The Central Bar, a local Wetherspoon pub, and ordering a pint.

Then, on July 10 last year at 1.19pm, Mosquera was seen on CCTV through the flat’s window, wearing white overalls, before leaving the flat then returning at 2.09pm with a large red suitcase.

Later that day CCTV showed the arrival of a red van, which Ms Heer said was driven by Julio Romero who would take Mosquera to Bristol.

The two men can be seen carrying the silver trunk suitcase together out of the flat and loading it into the van using a trolley. 

Mosquera, of no fixed address, admits one count of manslaughter but denies the murders of both Mr Alfonso and Mr Longworth.

The trial continues.