A damning report into the faulty Post Office IT system that preceded Horizon has been unearthed after nearly 30 years – and it could help overturn criminal convictions.
The document, known about by the Post Office in 1998, is described as “hugely significant” and a “fundamental piece of evidence” and was found in a garage by a retired computer expert.
Capture was a piece of accounting software, likely to have caused errors, used in more than 2,000 branches between 1992 and 1999.
It came before the infamous faulty Horizon software scandal, which saw hundreds of sub-postmasters wrongfully convicted between 1999 and 2015.
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1:49
What is the Capture scandal?
The “lost long” Capture documents were discovered in a garage by a retired computer expert who came forward after a Sky News report into the case of Patricia Owen, a convicted sub-postmistress who used the software.
Adrian Montagu was supposed to be a key witness for Pat’s defence at her trial in 1998 but her family always believed he had never turned up, despite his computer “just sitting there” in court.
Mr Montagu, however, insists he did attend.
He describes being in the courtroom and adds that “at some point into the trial” he was stood down by the barrister for Mrs Owen with “no reason” given.
Image: Adrian Montagu was supposed to be a key witness for Pat’s defence
Sky News has seen contemporaneous notes proving Mr Montagu did go to Canterbury Crown Court for the first one or two days of the trial in June 1998.
“I went to the court and I set up a computer with a big old screen,” he says.
“I remember being there, I remember the judge introducing everybody very properly…but the barrister in question for the defence, he went along and said ‘I am not going to need you so you don’t need to be here any more’.
“I wasn’t asked back.”
Image: The ‘lost long’ Capture documents were discovered in a garage
Sky News has reached out to the barrister in Pat Owen’s case who said he had no recollection of it.
‘An accident waiting to happen’
The report, commissioned by the defence and written by Adrian Montagu and his colleague, describes Capture as “an accident waiting to happen”, and “totally discredited”.
It concludes that “reasonable doubt exists as to whether any criminal offence has taken place”.
It also states that the software “is quite capable of producing absurd gibberish”, and describes “several insidious faults…which would not be necessarily apparent to the user”.
All of which produced “arithmetical or accounting errors”.
Sky News has also seen documents suggesting the jury in Pat Owen’s case may never have seen the report.
What is clear is that they did not hear evidence from its author including his planned “demonstration” of how Capture could produce accounting errors.
Image: But flaws were found within it
Pat Owen was convicted of stealing from her Post Office branch in 1998 and given a suspended prison sentence.
Her family describe how it “wrecked” her life, contributing towards her ill health, and she died in 2003 before the wider Post Office scandal came to light.
Her daughter Juliet said her mother fought with “everything she could”.
“To know that in the background there was Adrian with this (report) that would have changed everything, not just for mum but for every Capture victim after that, I think is shocking and really upsetting – really, really upsetting.”
Image: Pat died before the contents of the report came to light
The report itself was served on the Post Office lawyers – who continued to prosecute sub-postmasters in the months and years after Pat Owen’s trial.
‘My blood is boiling’
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3:09
‘They knew software was faulty’
Steve Marston, who used the Capture software in his branch, was one of them – he was convicted of stealing nearly £80,000 in September 1998.
His prosecution took place four months after the Capture report had been served on the Post Office.
Steve says he was persuaded to plead guilty with the “threat of jail” hanging over him and received a suspended sentence.
He describes the discovery of the report as “incredible” and says his “blood is boiling” and he feels “betrayed”.
“So they knew that the software was faulty?,” he says. “It’s in black and white isn’t it? And yet they still pressed on doing what they did.
“They used Capture evidence … as the evidence to get me to plead guilty to avoid jail.
“They kept telling us it was safe…They knew the software should never have been used in 1998, didn’t they?”
Steve says his family’s lives were destroyed and the knowledge of this report could have “changed everything”.
He says he would have fought the case “instead of giving in”.
“How dare they. And no doubt I certainly wasn’t the last one…And yet they knew they were convicting people with faulty software, faulty computers.”
Image: Steve’s prosecution took place four months after the Capture report had been served on the Post Office
The report is now with the Criminal Cases Review Commission, the body investigating potential miscarriages of justice, which is currently looking into 28 Capture cases.
A fundamental piece of evidence
Neil Hudgell, the lawyer representing more than 100 victims, describes the report as “hugely significant”, “seismic” and a “fundamental piece of evidence”.
“I’m as confident as I can be that this is a good day for families like Steve Marston and Mrs Owen’s family,” he says.
“I think (the documents) could be very pivotal in delivering the exoneration that they very badly deserve.”
He also added that “there’s absolutely no doubt” that the “entire contents” of the “damning” report “was under the noses of the Post Office at a very early stage”.
Image: Pat Owen
He describes it as a “massive missed opportunity” and “early red flag” for the Post Office which went on to prosecute hundreds who used Horizon in the years that followed.
“It is a continuation of a theme that obviously has rolled out over the subsequent 20 plus years in relation to Horizon,” he says.
“…if this had seen the light of day in its proper sense, and poor Mrs Owen had not been convicted, the domino effect of what followed may not have happened.”
What the Post Office said
Sky News approached the former Chief Executive of the Post Office during the Capture years, John Roberts, who said: “I can’t recall any discussion at my level, or that of the board, about Capture at any time while I was CEO.”
A statement from the Post Office said: “We have been very concerned about the reported problems relating to the use of the Capture software and are sincerely sorry for past failings that have caused suffering to postmasters.
“We are determined that past wrongs are put right and are continuing to support the government’s work and fully co-operating with the Criminal Cases Review Commission as it investigates several cases which may be Capture related.”
A Department for Business and Trade spokesperson said: “Postmasters including Patricia Owen endured immeasurable suffering, and we continue to listen to those who have been sharing their stories on the Capture system.
“Government officials met with postmasters recently as part of our commitment to develop an effective and fair redress process for those affected by Capture, and we will continue to keep them updated.”
Donald Trump has revealed a list of more nations set to face delayed ‘liberation day’ tariffs from 1 August.
He has threatened tariffs of 30% on Algeria, 25% on Brunei, 30% on Iraq, 30% on Libya, 25% on Moldova and 20% on the Philippines. Sri Lanka was later told it faced a 30% duty.
Letters setting out the planned rates – and warning against retaliation – are being sent to the leaders of each country.
They were the latest to be informed of the president‘s plans after Japan and South Korea were among the first 14 nations to be told of the rates they must pay on their general exports to the US from 1 August.
The duties are on top of sectoral tariffs, covering areas such as steel and cars, already in place.
Mr Trump further warned, on Tuesday, that a 50% tariff rate on all copper imports to the US was looming.
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He has also threatened a 200% rate on pharmaceuticals and is also expected to take aim at all imports of semiconductors too.
The European Union, America’s largest trading partner in combined trade, services and investment, is expected to get a letter within the next 48 hours unless further progress is made in continuing talks.
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2:49
Who will be positively impacted by the UK-US trade deal?
The bloc, which Mr Trump has previously claimed was created to “screw” the US, has been in negotiations with US officials for weeks and working to agree a UK-style truce by the end of the month.
The EU has retaliatory tariffs ready to deploy from 14 July but it is widely expected to delay them until such time that any heightened US duties are imposed.
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Trump to visit UK ‘in weeks’
It remains hopeful of a deal in the coming days but European Commission president Ursula von der Leyen told the European Parliament: “We stick to our principles, we defend our interests, we continue to work in good faith, and we get ready for all scenarios.”
While the UK’s so-called deal with Mr Trump is now in force, it remains unclear whether steelmakers will have to pay a 50% tariff rate, deployed by the US against the rest of the world, as some final details on an exemption are yet to be worked out.
The value of its shares has risen by 409,825% since its market debut in 1999.
Its status has been cemented thanks to the rush for AI technology – suffering several wobbles along the way – but nothing significant when you refer to the percentage rise of the past 26 years.
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The most recent pressures have come from the emergence of the low-cost chatbot DeepSeek and concerns for global AI demand as a result of Donald Trump’s trade war hitting growth.
Financial markets have been taking a more risk-on approach to the trade war since the delays to “liberation day” tariffs in April.
It’s explained by a market trend that’s become known as the TACO trade: Trump always chickens out.
Image: The milestone is reported by Sky’s US partner CNBC, seen on screens at the New York Stock Exchange. Pic: Reuters
It has helped US stock markets post new record highs in recent days.
The wave of optimism is down to the fact that the president is yet to follow through with the worst of his threatened tariffs on trading partners.
Corporations are also yet to report big hits to their earnings – a fact that is also propping up demand for shares.
If Mr Trump does go all-out in his trade war, as he has now threatened from 1 August, then that $4trn market value for Nvidia – and wider stock markets – could be short-lived, at least in the short term.
But market analysts believe Nvidia’s value has further to go.
Matt Britzman, senior equity analyst at Hargreaves Lansdown, said of its meteoric rise: “Once known for powering video games, NVIDIA has transformed into a foundational player in AI infrastructure.
“Its high-performance chips now drive everything from natural language processing to robotics, making them essential to training and deploying advanced AI models.
“Beyond hardware, its full-stack ecosystem – including software platforms and developer tools – helps companies scale AI quickly and efficiently. This end-to-end approach has positioned Nvidia as a cornerstone in a market where speed, scalability, and efficiency are critical.”
He added: “The key question is where it goes from here, and while it might seem strange for a company that’s just passed the $4trn mark, Nvidia still looks attractive.
“Growth is expected to slow, and it’s likely to lose some market share as competition and custom solutions ramp up. But trading at a relatively modest 32 times expected earnings, and over 50% top-line growth forecast this year, there’s still an attractive opportunity ahead.
“For investors, it remains a compelling way to gain exposure to the AI boom – not just as a participant, but as one of its architects.”
The future of the UK economy is weaker and more uncertain due to President Trump’s tariffs and conflict in the Middle East, the Bank of England has said.
“The outlook for UK growth over the coming year is a little weaker and more uncertain,” the central bank said in its biannual health check of the UK’s financial system.
Economic and financial risks have increased since the last report was published in November, as global unpredictability continued after the announcement of country-specific tariffs on 2 April, the Bank’s Financial Stability Report said.
These risks and uncertainty, as well as geopolitical tensions, like the wars in Ukraine and the Middle East, are “particularly relevant” to UK financial stability as an open economy with a large financial sector, it said.
Pressures on government borrowing costs are “still elevated” amid significant doubts over the global economic outlook.
Had a 90-day pause on tariffs not been announced, conditions could have worsened, the report added.
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The chance of prices rising overall has also grown as tensions between Iran and Israel and the US threaten to push up energy prices.
Possible higher inflation in turn raises the prospect of more expensive borrowing from higher interest rates to bring down those price rises. This compounds the pressure on state borrowing costs.
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Trump’s tariffs: What you need to know
Mortgages
Borrowing costs for about 40% of mortgage holders are set to become costlier over the next three years as households refix to more expensive deals, affecting 3.6 million households, the Bank said.
Many homes have not refixed their mortgage since interest rates began to rise in 2021, meaning the full impact of higher rates has yet to filter through.
Those looking to get on the property ladder got a boost as the Bank said lenders could issue more loans deemed to be risky, meaning people could be able to borrow more.
Financial institutions can now have 15% of their new mortgages deemed risky every year, up from the current 9.7%.
Riskier mortgages are those with a loan value above 4.5 times the borrower’s income.
Be ‘prepared for shocks’
Despite the global and domestic economy concerns, the outlook for UK household and business resilience remained “strong”, the Bank said.
Investors, however, were warned that there could be “sharp falls in risky asset prices”, which include shares and currencies.
If there are any vulnerabilities in non-bank lenders, it “could amplify such moves, potentially affecting the availability and cost of credit in the UK”.
“It is important that in their risk management, market participants [people involved in investing] are prepared for such shocks.”
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The steep market reaction following the tariff announcements in April “highlights that the interconnectedness of global financial markets can mean stress from one market can move quickly to others,” the report said.
Overall, though, “household and corporate borrowers remain resilient”, the Bank concluded.