It has a sign on it labelled "Grenfell Tower" and has cardboard figures of people looking out of the windows. One man cracks: "All the little ninjas getting it at the minute;" another adds, "That's what happens when they don't pay their rent".
Three officers from the Metropolitan Police carried evidence bags into the terrace property in South Norwood.
Since the video appeared it has been widely condemned with the Prime Minister Theresa May calling it "utterly unacceptable" and Home Secretary Sajid Javid described it as "disgusting, shameful, behaviour".
Faouzia and Abdulaziz El-Wahabi, 42 and 52, died alongside their children, Yasin, 20, Huda, 16, and Mehdi, eight, in the flat as the fire ripped through the west London tower block leaving 72 people dead. In one Twitter post, Kay Oldroyd tagged police saying she wanted the people in the video -whom she described as "beasts"- to be prosecuted.
Grenfell United, the official organisation for bereaved, survivors and community of Grenfell Tower, said: "It's a disgusting video".
Ms Connell added: "My heart really goes out to the Grenfell families - people who have lost loved ones and then have ended up reliving the horror by seeing all this".More news: Wang Qiang Stuns Muguruza to reach Zhuhai WTA Elite Trophy final
Metropolitan Police Commander Stuart Cundy, who is leading the investigation into the Grenfell Tower tragedy, said he was "frankly appalled by the callous nature" of the video. The building was destroyed by a rapidly-spreading fire in June 2017, killing more than 70 people, many of whom were trapped in the upper floors of the building.
The video also drew allegations that it was racist because numerous Grenfell Tower victims were people of immigrant backgrounds and Muslim.
London Mayor Sadiq Khan voiced his disgust, saying, "I utterly condemn this sickening video".
"I can't imagine the distress this video will undoubtedly cause to bereaved families and survivors". "Help me, help me!" shrieks another, seemingly mocking the last words of some of the victims.
The offence can be committed in a public or private place and does not require the person said to have been harassed, alarmed or distressed to be present.
The final death toll in one of the worst fire disasters in the U.K.is 72, including 18 children and a stillborn baby, according to the British police.