A British parliamentary group on Wednesday morning published an updated version of what has been praised as the most comprehensive English-language report on the Hamas attack of October 7, 2023.
The 340-page report includes new material not included in the first edition released last March, including testimonies from former hostage Emily Damari and Anat Ron-Kendall, the only known British survivor of the attack.
The All-Party Parliamentary Group (APPG) for Israel commissioned the project, chaired by renowned historian Andrew Roberts, as a response to attempts to deny and minimize the atrocities that began even while the massacre was still happening.
“Parliamentarians were saying that they were being confronted with October 7 denial from constituents, so the group decided to put together an authoritative body of work to document what actually happened,” said Talia Ingelby, the secretariat to the APPG, who worked closely with the commission.
The report is not an official parliamentary inquiry, but an initiative of a cross-party group of lawmakers, explained Ingelby, who serves as chief of staff to Jon Mendelsohn in the House of Lords. Roberts oversaw a research team that compiled official data, testimonies and open-source material into the document, whose first version had printed copies mailed to every member of the House of Commons and House of Lords, she noted.
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The second edition will rely mainly on online distribution, though a limited number of hard copies will be available, Ingelby said.
The October 7 attack was one of the worst terror outrages in the annals of history, the report said. Some 7,000 individuals participated in the massacre, in which 1,182 people were murdered, over 4,000 were injured, and 251 were taken hostage.
Hamas terrorists near Kibbutz Nir Oz during the massacre on October 7, 2023. (AP Photo/Hassan Eslaiah)
Citizens from 44 nations were either killed or taken hostage by Hamas and other terrorist groups, the report said. These included 18 UK citizens, marking largest number of UK deaths from a terror attack in the Middle East, and the second highest worldwide since the attacks of September 11, 2001.
The report details the meticulous planning that went into the massacre, including a 6-page memo by Yahya Sinwar, the former leader of Hamas in Gaza, with instructions for the day. It includes information on the nature and scale of the murders, including Hamas’s youngest victim, a fetus shot in the womb, as well as its oldest victim, a 92-year-old Holocaust survivor killed in his safe room by a grenade.
The updated edition maintains the structure of the original report, but adds fresh material and analysis detailing the murder, torture and sexual violence which took place, and also sheds new light on the planning process and terror organizations involved in the assault, the APPG said in a press release.
This includes testimonies by Damari, Ron-Kendall, and a dozen hostages released after the first edition was published. It also incorporates data from IDF inquiries to display “heat maps” visualizing where terrorists were concentrated and where the worst violence occurred.
Hamas terrorists attack an army base next to the Erez Crossing, on October 7, 2023, in footage released by the terror group. (Screenshot: Telegram)
Consolidating this information into one English-language volume is critical for lawmakers who do not follow Israeli or Hebrew media closely, Ingelby said.
“This audience doesn’t see a lot of the media that comes out of Israel, so this was a useful way to present the information,” she said.
The report is written in an unemotional, analytic style that details the attacks without any emotive adjectives or judgment of the events.
“We let the facts speak for themselves, because the immorality of what happened shines through in the cold, black and white facts of what happened,” Ingelby said. That allows the document to function as a reference point, rather than a manifesto for one side of the conflict, she explained.
A Palestinian stands on an Israeli tank at the border fence near the city of Khan Younis in the southern Gaza Strip after some 3,000 Hamas terrorists burst through the border and entered Israel, slaughtering some 1,200 people, October 7, 2023. (Yousef Mohammed/Flash90)
The report also fills a gap left by the absence of a formal Israeli state inquiry into the attacks, even as various investigative efforts continue, Ingelby noted.
“In lieu of that, it’s going to be years before history is sorted out, so ours was the first authoritative report on the matter,” she said.
Perhaps most importantly, the report comes against a backdrop of rising antisemitism across Britain. Some 3,700 antisemitic incidents were recorded in the United Kingdom in 2025, the second-highest level on record, according to a report released last month by the Community Security Trust.
Armed police officers talk with members of the community near Heaton Park Hebrew Congregation synagogue in Crumpsall, north Manchester, on October 2, 2025 (Paul Currie / AFP)
Earlier this week, a poll commissioned by the British Union of Jewish Students showed that one in five university students in the UK would be “reluctant” or unwilling to share an apartment with a Jewish student.
“We are in an atmosphere of increased antisemitism,” Ingelby said. “There are still hate marches on the streets.”
Much of this is built on widespread denial about what actually happened on October 7, which many anti-Israel activists refuse to believe or simply ignore, according to Ingelby.
Blood is seen splattered in a child’s room following a massive Hamas terror onslaught on October 7, 2023 in Kibbutz Nir Oz, October 19, 2023 (AP/Francisco Seco)
In his introduction to the first version of the report last year, Roberts noted that, while Holocaust denial took years to take root in certain portions of society, denial of the October 7 massacre began just hours after it started.
The first protests against Israel in the UK were already being organized while Hamas was still in the midst of its killing and kidnapping spree in Israel, before the IDF began fighting back, Ingelby said.
“This report is there so that people can’t look away from that,” she said.
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