A young musician fell five floors to his death after losing his key and climbing a drain pipe to get in to his Holloway flat, an inquest determined today.

Rapper Dean Martin Laskowski, who went by the stage alias Lxsko, plummeted from the roof of his Packington Estate flat on June 9. He died just after 5am.

And Mary Hassell, senior coroner at St Pancras Coroner’s Court, ruled Mr Laskowski’s death was “a terrible accident” and gave his medical cause of death as “multiple injuries, including severe head injuries”.

In her determination, she said: “Death was as a result of an accident. Dean lost his keys and was locked out of his fifth floor flat.

“He climbed up a drain pipe and tried to get in via a balcony but that was locked from the inside, so he climbed up onto the roof and tried to get in from the other side of the building. At that point he fell to the floor below.”

The 29-year-old, also a digital embroiderer, had recently moved into the flat. His uncle, Richard Laskowski, met him for a drink on the evening he died.

In evidence, his uncle said: “He was fairly quiet whenever I used to meet him but he was fond of his music.

“Since his mother passed away [in April last year} he was upset about it but he certainly started getting happier and more positive.”

The witness said they had a few beers before he walked his nephew back to his flat.

“He was very positive about how things were going for him that evening,” he added. “And basically he was looking forward to the future.”

Later that evening Mr Laskowski met his friend Isaac Dobiro.

Mr Dobiro was meant to help him assemble some flat pack furniture, but they decided to go for drinks at the Winchester Arms and leave the home building for Sunday.

Mr Dobiro described his friend as “quiet and down to earth”, adding his friend had been “happy and energetic” on the evening he died.

They parted ways outside at about 4.30am and, shortly after, police and paramedics were called to reports of a man “falling 40 foot”.

Sgt Liam Redrup. a supervisor on the emergency response team, interviewed witnesses at the scene.

Sgt Redrup said: “Once I had spoken to everyone there I was satisfied there was no third party involvement at the time.”

Dr Virender Gupta, of the Sobell Medical Centre, confirmed Mr Laskowski was “not suicidal”.

And toxicology reports from Dr Rebecca Andrews and Dr Rosa Cordero, both of Imperial College London, found no traces of alcohol or recreational drugs in his system.

Dr Liina Palm, a pathologist at Great Ormond Street Hospital, said: “The radiological and external injuries [were] all consistent with a fall from height.”

She added there was “no signs of a fight”, concluding he died from 1A injuries, “including severe head injuries”.