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Violence, overcrowding, self-harm: 91热爆 goes inside one of Britain鈥檚 most dangerous prisons

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Prisoners and guards walking around a wing of HMP Pentonville.

There鈥檚 chaos in HMP Pentonville.

A piercing alarm alerts us to what prison officers describe as an 鈥渋ncident鈥. There鈥檚 a cacophony of slamming metal doors, keys jangling, and shouts and screams from inmates as officers race to see what鈥檚 happened. We run behind as they head to where the trouble is.

Cell doors and chipped painted white bars are just about the only scenery as we move through this chaotic and nerve-jangling environment.

A muffled walkie-talkie tells us it鈥檚 a case of self-harm. An inmate who鈥檚 been locked up for most of the day has carved 鈥渕um and dad鈥 into his arm with a sharp object. A quick glance into the cell and the sight of blood. A prison officer crouches down, stemming the flow.

The 91热爆 has been given rare access to HMP Pentonville men's prison in north London at a time of major crisis for jails in England and Wales.

Next week, with prisons across the country running out of cells for new inmates, the government will release some offenders early in a controversial scheme aimed at easing the overwhelming pressure on a system on the brink of collapse.

Over the course of two days inside Pentonville this week, we were confronted with the stark reality of this crisis.

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鈥楩ights, killings鈥ll sorts could happen鈥 - Inside one of the UK's most dangerous prisons

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Shay Dhury has been a prison guard at HMP Pentonville for nearly five years

The pressure on staff is immense. In just half a day, we hear six alarms. The day before there were more than 30. Prison officers don鈥檛 know what they鈥檙e running towards behind those locked and bolted doors. Blood, violence or even death are all possibilities.

Shay Dhury has been a prison officer here for almost five years and says she鈥檚 never seen it this bad. Recently, both her wrists were broken as she tried to separate two gang members during a fight. She believes gang-related crime is one of the main reasons there are so many people in prisons, especially Pentonville.

鈥淭hey go for each other - and when two people go, other people go,鈥 she says. 鈥淚t ends up us just trying to stop the fight. It gets really messy sometimes - stressful, yeah.鈥

HMP Pentonville was built in 1842 and is largely unchanged structurally in 180 years. Originally designed to hold 520 people in single cells, it now has an operational capacity of 1,205, with two prisoners packed into each cell.

The jail is dangerously close to capacity - with just nine beds remaining when we are there. And humans are not the only inmates here: mice and cockroaches are rife.

The government says Pentonville epitomises the challenges facing ageing, inner-city prisons with transient populations who have varied and complex needs.

More than 80% of Pentonville inmates are on remand, which means they are awaiting trial. The rest have been convicted of serious crimes including murder, rape, and drug offences.

Remand is at a 50-year high across England and Wales - and that鈥檚 partly down to a backlog in the criminal courts. Ministry of Justice (MoJ) figures show the Crown Court system has a backlog of more than 60,000 cases. The Magistrates Court has a backlog of more than 300,000 cases.

HMP Pentonville

  • It costs 拢48,949 to keep a prisoner in Pentonville for a year, 拢52.4m for the whole population

  • 57% of inmates live in crowded accommodation

  • Those not in training or education spend just one hour a day out of their cell

  • 104 incidents of self harm were recorded in March 2024 - the most in a single month since records began

  • There were seven suicides in the prison between 2019 and 2023

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One prisoner has been trying to get his leaking toilet fixed for three weeks

Tom - not his real name - is on remand. His cell is tiny. It鈥檚 around seven feet by six feet (2m x 1.8m) and has a pungent smell of urine, faeces, and rotten food. A bunk bed takes up most of the space. The toilet, in the corner beside the sink, is leaking and there are wet splashes on the floor.

鈥淚've been telling them about that for three weeks,鈥 Tom says. 鈥淚 could fix it - I'm actually a plumber - but it had no washers in there.鈥

Overcrowding impacts all areas of life inside. With fewer officers to inmates, prisoners鈥 needs can鈥檛 always be met, which means some, like Tom, are living in cells that aren鈥檛 properly operational for several weeks when repairs are needed.

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Michael Lewis says his former cell mate tried to take his own life

Michael Lewis is inside for drug offences. He鈥檚 38 and has been in and out of jail for several years, but hopes this will be his last stint.

鈥淚t鈥檚 hard to rehabilitate yourself in a place where you've got gang violence, postcode wars, drug violence, money wars,鈥 he says, highlighting how overstretched staff are.

鈥淭hey're trying to do this, this, this and this - but now you want help as well? So it's hard.鈥

He tells me about the night he woke to find his former cellmate trying to hang himself.

鈥淚 could tell he wasn't dead because he was still breathing, he鈥檚 still warm,鈥 Lewis says, describing the wait for a prison officer to come to help.

鈥淗e can't open the door on his own at night - keys and everything, security risk,鈥 Lewis explains. 鈥淲aited for another staff member - and as soon as he came in he saw to him.

鈥淗e survived.鈥

'I would rather die'

I鈥檝e been to several prisons and the situation at Pentonville is the worst I have seen.

The staff seem to be doing what they can in very difficult circumstances, fighting problems, crises, and violence - but they are often struggling to cope.

Sixteen people will be released from here next week when the government releases thousands of offenders early. The prison鈥檚 governor, Simon Drysdale, says that will alleviate some of the pressure and mean more people who鈥檝e been sent to Pentonville - a reception prison serving all London courts - can be transferred on to other jails because they too will have more available cells.

鈥淥ur total focus is on making sure that we've got space and capacity,鈥 Mr Drysdale says. 鈥淭hat takes up a large proportion of our thinking space and a lot of the staff's time, and because of that we don't get as much time as we would like to think about things like getting men into more meaningful work.鈥

But some Pentonville inmates are doubtful that 16 inmates being released from here will make a difference. One, who didn鈥檛 want to be filmed, speaks to us while crouched on the floor with his back against the wall.

鈥淣othing will ever change,鈥 he says, sobbing.

鈥淭hey don鈥檛 care about us. I would rather die.鈥

If you are affected by any of the issues raised in this story, support and advice is available via the 91热爆 Action Line.

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