The 40-year-old was told he would never be released after killing two men he knew from his time at a homeless hostel in Newquay, Cornwall.
Their bodies were dismembered and hidden near his cabin in the woods.
Desborough - a fan of the serial killer show Dexter - murdered Daniel Coleman, 43, and Claudio Aquilino, 57, last summer.
While waiting for his trial to start, he strangled his prison cellmate, Steven Kempster, after only a few days because he was irritated by his snoring.
Desborough was found guilty of that murder in March and of the other two killings on Tuesday.
The judge at Winchester Crown Court told him he was "a highly dangerous individual who has no regard for the lives of people who you think are worthless".
"You are a person who can kill in extreme violence, with no remorse or indeed reflection on your actions," said Mr Justice Saini.
Police have also revealed they are still reviewing the unexplained deaths of two men and two women who were at the homeless shelter at the same time as Desborough, between December 2024 and April 2025.
Detective Superintendent Rachael Bentley said they currently don't believe Desborough is a suspect but the investigation into the deaths at Sandy Lodge Hotel is ongoing with "some final reviews to be done".
Officers attended each of the deaths at the time and inquiries suggested natural causes.
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The coroner paused its investigation when Desborough was arrested for murder and a review began that included extra forensic work, looking at CCTV and taking statements.
"I said before there's no other information that's come into the investigation that suggests that he's linked to any of the deaths," said DS Bentley.
"We don't believe we're looking for any victims, but I do want to stress that the investigations are ongoing. They are going to be reviewed again now the trial has concluded."
Desborough, who weighs nearly 18st, killed Coleman and Aquilino and spent their money on drink and drugs.
He claimed they had left Cornwall, but their bodies were found in Sticker Woods, near St Austell, where he lived in a wooden cabin.
Some 1,900 burned bone fragments from Mr Aquilino were also discovered in a stream.
Parts of Mr Coleman's body were found in a shallow grave nearby. His genitals have never been found and police haven't ruled out that they may have been deliberately removed.
Prosecutors said Desborough was jealous of Mr Coleman because he had developed a sexual interest in his friend's ex-wife.
The killer also told a forensic biologist he "particularly enjoyed the dismemberment scenes" in TV series Dexter.
The father-of-one denied the murders and told jurors it was a "series of unfortunate circumstances" the two men died on his land within a short space of time.
FIFA wants to set up a separate $20bn company to run its competitions, with 20% of it ($4bn) offered to external investors.
Joshua Kushner, the brother of Donald Trump's son-in-law Jared Kushner, is reportedly in line to be the lead investor in the subsidiary, to be called FIFA Forward Enterprise (FFE).
The plans announced on Tuesday have sparked accusations football is being "sold off" and follow a string of controversies surrounding the recent World Cup.
And now Blatter, who ran FIFA for 17 years, has spoken out.
He told news agency Reuters: "Football belongs to no individual and to no institution. It belongs to the people.
"If FIFA were transferred into a profit-oriented corporate structure, it would lose its soul."
A spokesperson for England's Football Association (FA) said it had been "completely unaware" of the proposal.
They said the organisation was "deeply concerned about the lack of process and governance to get to this point, and the apparent substance and principles involved".
"When the proposal is shared in the full and transparent way now promised by FIFA, we will make our views clear, and comment further," the FA added.
European governing body UEFA has also savaged the plan and will hold an emergency online meeting on Thursday.
It urged clubs and national football associations to speak out and said the proposal "crosses a line that football's governing institutions should never cross".
"The soul and governance of football are not assets to trade - especially with zero transparency as to who gains financially. None of us are the owners of football. It is not FIFA's to sell," said UEFA.
European nations are discussing boycotting the World Cup if FIFA president Gianni Infantino pushes ahead.
Infantino has promised the new entity will solely be focused on "generating as much value as possible" for national associations to invest in homegrown football.
Regional bodies 'not consulted'
However, regional governing bodies said they had been blindsided and accused FIFA of not consulting them.
CONCACAF, which looks after football in North and Central America and the Caribbean, said it discovered the plans second hand - despite its leader, Victor Montagliani, being a FIFA vice president.
It said it was disappointed details were "shared publicly before any discussion with the relevant governance bodies and stakeholders has taken place".
The Asian Football Confederation (AFC) also said it was caught unawares by the plan.
"Initiatives of this scale and consequence must be founded upon the principles of good governance, transparency and meaningful consultation," the AFC said.
A similar rebuke came from the European Football Clubs (EFC) organisation, led by Infantino's global football power rival, Nasser Al-Khelaifi, president of Paris Saint-Germain and chair of the beIN media network.
It said the EFC had "serious concern" over the "sudden, unilateral media briefings and announcement by FIFA".
Former FIFA president Sepp Blatter, who ran the organisation for 17 years, also criticised the proposals.
He told news agency Reuters: "Football belongs to no individual and to no institution. It belongs to the people.
"If FIFA were transferred into a profit-oriented corporate structure, it would lose its soul."
The head of the Czech FA is a current outlier in supporting FIFA's plan.
David Trunda told Mark Kleinman, Sky's City editor, it would provide valuable extra funding for grassroots football and infrastructure.
"Of course we need more details, but my personal point of view is that I can see the positive impact of FIFA's intentions," Mr Trunda said.
Infantino issues deadline
Sky News sports correspondent Rob Harris said Infantino had given national associations until 19 September to back his plan, with a boosted $40m incentive to accept.
He made the offer in a letter to FIFA's 211 member associations.
Infantino warned they would have much less cash for development, grassroots football and national teams if they didn't support his plan.
He said the launch of FFE needed the backing of its ruling council and more than 50% of its members.
Infantino wrote: "Should neither condition be satisfied, FIFA will continue as planned with the Forward Programme 4.0… meaning approximately $10m per ME [Member Association] for the next cycle."
One football figure told The Times it was "pure bribery".
UEFA said the deadline for associations to support the proposal "or have the one-off payout offer withdrawn... says everything you need to know about this plan".
"FIFA cannot continue to use our sport to enrich themselves and their friends," it added.
FIFA has not commented on how Infantino might benefit personally from delivering the $20bn venture.
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In his letter, Infantino called his offer a "singular and unique funding opportunity only for those Member Associations who wish to participate, with their decision to be made by 19 September 2026 so we can plan ahead and with funds to be available immediately as of 1 January 2027".
He said the new company would be "fully focused on one target objective; generating as much value as possible for FIFA's Member Associations".
Thrive Capital - an investment firm run by Joshua Kushner, is being positioned as the lead backer of the deal.
Infantino has been accused of being too close to Mr Trump. He awarded him a special FIFA peace prize in the run up to the World Cup and suspended a red card given to America's star player after the president called him during the tournament.
The growing commercialisation of the event, such as soaring ticket prices and the introduction of hydration breaks (which allow more adverts to be shown), has also been widely criticised.
FIFA's boss said critics of this summer's World Cup were "consumed by hate" and had spread "false rumours".
In a statement on his own and FIFA's Instagram accounts on Monday, he said they missed all the "joy and happiness" the tournament had brought.
Some Argentina stars brandished a sheet declaring "Las Malvinas Son Argentinas" ("The Falklands are Argentine") following the team's 2-1 semi-final win against England.
The large handwritten banner proclaiming Argentinian ownership of the British overseas territory came after two late goals had seen the team secure victory in Atlanta.
World football's governing body said that using a sports event for demonstrations of a non-sporting nature was a potential breach of the FIFA disciplinary code.
Other alleged Argentina breaches at the tournament include discriminatory chants and gestures, late kick-offs, security protocol failures, inappropriate team and spectator messages, and objects thrown by fans across several matches during the tournament.
Meanwhile, disciplinary proceedings were also opened by FIFA against several players following the final, in which Spain beat Argentina 1-0 after extra time.
There was a brief brawl at the final whistle in New Jersey when Argentina midfielder Leandro Paredes shoved Spain's Gavi to the ground as Spain's substitutes rushed on to the pitch to celebrate.
Paredes faces three assault counts while team-mate Nahuel Molina faces two counts.
Molina, fellow Argentina player Thiago Almada and Argentine official Roberto Ayala, as well as Spain's Gavi, face one count each for unsporting behaviour.
Argentina were widely condemned for their conduct after the match as Spain's celebrations of a second World Cup victory were marred by violence.
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FIFA's disciplinary committee has opened proceedings against the Argentinian FA for potential breaches of article 13 paragraph 2 c) (using a sports event for demonstrations of a non-sporting nature), article 14 paragraph 5 (team misconduct), article 15 (discrimination and racist abuse) and article 17 (order and security at matches) of the FIFA disciplinary code.
FIFA said it was "in light of discriminatory chants and gestures, late kick-offs, failure to comply with match and security protocols, the display of inappropriate messages by the team and spectators and the throwing of objects by spectators in relation to several matches of the representative team of Argentina".
Dr Anthony Fauci, who became the face of the US pandemic response during Donald Trump's first term in office, invoked his constitutional right against self-incrimination when appearing before a Republican-led Senate committee in Washington DC.
The scientist, who is 85 and retired in 2022, declined to answer questions from politicians and accused a Republican senator of having an "unhinged obsession with me".
In his opening statement, the health official, who used to lead the National Institute of Allergy and Infectious Diseases (NIAID), said: "Under the advice of my attorneys, I will invoke my right under the fifth amendment of the constitution to refrain from answering your questions."
Dr Fauci declined to answer 15 questions from the chair of the Senate Homeland Security and Governmental Affairs Committee, Rand Paul, invoking his fifth amendment rights for each of them.
Mr Paul said the committee had scheduled a vote for next week to hold Dr Fauci in contempt.
There are lingering tensions between Dr Fauci and Republican politicians over his handling of the pandemic and accusations he lied about the origins of COVID-19, which he denies.
Former US president Joe Biden pardoned Dr Fauci on 19 January 2025 for any offences he may have committed since 2014 in connection with COVID-19 or in his role as NIAID director. The pardon does not cover subsequent conduct.
In his opening statement, Mr Paul alleged Dr Fauci helped produce the COVID-19 pandemic by approving funding of research on virus mutations and then covered up his complicity.
Mr Paul claimed Dr Fauci was not allowed to plead the fifth, that the presidential pardon would not protect him, and that there would be consequences for his refusal to answer the questions.
Mr Paul said: "The committee will have to consider after this hearing what appropriate action should be taken against you for the failure to testify after being directed to do so. It's against the law to obstruct an investigation of Congress. There will be repercussions to your refusal to testify today."
For years, Mr Paul has called for Dr Fauci to be indicted and accused him of lying to Congress about whether the National Institutes of Health (NIH) funded "gain-of-function" research in Wuhan, China, and of helping cover up the origins of COVID-19.
Dr Fauci denies both claims and says he has testified truthfully multiple times before Congress on these issues.
Gain-of-function research is work that modifies a pathogen so it could become more transmissible or dangerous.
Leading up to the hearing, Mr Paul released more than 1,000 pages of Dr Fauci's personal diary covering the pandemic years.
Pointing to notes about early efforts at working out how the virus emerged, Mr Paul wrote on X that what Dr Fauci "wrote privately and what he told the country are two different stories".
Dr Fauci accused Mr Paul of having an "obsession with calling for my prosecution", "repeated slanderous comments about me", and "publicly releasing my unredacted personal diary aimed at embarrassing and intimidating me".
Dr Fauci said: "The only conclusion I can reach is that the sole reason he is calling me before this committee is to get me to say something that could vindicate his repeated public pledges that I end up, in his words, 'behind bars'.
"Any reasonable person who has followed his unhinged obsession with me would readily come to the same conclusion."
Scientists differ over how narrowly the term "gain-of-function" research should be defined and that disagreement is at the heart of the Paul-Fauci row.
Mr Paul says the NIH funded such work in Wuhan and that Dr Fauci lied when he denied it, while Dr Fauci says the research did not meet the government's formal regulatory definition.
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The origins of COVID-19 are still unknown.
In 2023, the FBI said a leak from a laboratory in Wuhan likely caused the pandemic - China said this claim had "no credibility whatsoever".
The CIA said in January 2025 it had concluded a lab leak was likely, but with "low confidence".
The boy is the third person to die as a result of the incident in West Mersea on Wednesday, 22 July, which also claimed the lives of 41-year-old Shelina Rahman and her 15-year-old daughter Sameeha.
Ms Rahman and her daughter were in the water with four other family members at West Mersea beach on Wednesday 22 July when they got into difficulty.
The family and members of the public tried to help them, but Shelina and Sameeha, from Ilford in east London, were pronounced dead.
The seven-year-old boy was flown to hospital in a critical condition after the incident near the Sea View Holiday Park.
Detective Chief Inspector Al Pitcher, who is leading the investigation into the circumstances around the incident, said: "All our thoughts are with the family and friends of those involved - as has been the case since this incident took place last week.
"Their bravery and strength has been humbling.
"We continue to build a complete picture of the circumstances which led up to this incident and our work is continuing alongside our partners."
In a statement, the boy's family said: "We would also like to thank the Royal London Hospital intensive care unit team of doctors and nurses who demonstrated outstanding care and dignity for whilst we have been at the hospital.
"We would also like to thank the whole community for their support and prayers.
"We would appreciate privacy during this very difficult time."
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There have been a number of drownings in the UK over the summer, including during the May heatwave when at least 15 people, mostly children, drowned swimming in open water.
Prime Minister Andy Burnham previously said the government would provide support to local authorities following the deaths, adding he was "so sad to hear the news".
He told ITV Anglia: "It does bring over... the dangers of open water swimming at this time of the year."