A Fishmongers' Hall victim had only decided to attend the event the night before and previously told her mother that terror offenders should be monitored more closely, an inquest into the attack has heard.
Cambridge graduates Jack Merritt, 25, and Saskia Jones, 23, were killed by convicted terrorist Usman Khan, 28, at a London event marking the fifth anniversary of prisoner educational programme Learning Together on November 29, 2019.
Khan, from Stafford in the West Midlands, armed himself with knives and strapped a fake suicide belt to his waist before attacking conference delegates.
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Cambridge graduates Jack Merritt, 25, and Saskia Jones, 23, were killed by convicted terrorist Usman Khan, 28, at a London event marking the fifth anniversary of prisoner educational programme Learning Together on November 29, 2019
He was later chased by three men, armed with a fire extinguisher and a narwhal tusk, onto London Bridge, where he was shot dead by police.
Michelle Jones, the mother of Saskia Jones, said in a witness statement to the inquest that her daughter was initially unsure of whether to attend the Fishmongers' Hall event - only deciding to go the day beforehand.
She said: 'Saskia was at first unsure, and the uncertainty persisted until the evening before (November 28, 2019).
Khan (pictured), from Stafford in the West Midlands, armed himself with knives and strapped a fake suicide belt to his waist before attacking conference delegates
'Eventually, she decided she should go.
'Saskia was not aware of who would be attending the event. I asked Saskia the evening before and she still did not know, save for a few staff.'
Ms Jones added: 'I had several conversations with Saskia towards the treatment of ex-offenders, she believed there should be a distinction between terrorists and other ex-offenders.
'Her view of terror offenders was, although they should be given possibility to change, they should be more closely monitored.'Insurance Loans Mortgage Attorney Credit Lawyer
Michelle Jones (pictured), the mother of Saskia Jones, said in a witness statement to the inquests that her daughter was initially unsure of whether to attend the Fishmongers' Hall event - only deciding to go the day beforehand
Khan pictured on a train to Euston. The train he was planning to travel was cancelled, leading to him calling Simon Larmour, a worker from Learning Together, in an apparent panic. He got onto a more direct train that left at 7.44am but he did not have the right ticket and at 8.11am, when his ticket was checked onboard, he bought a discounted ticket
In November 2019 Khan stabbed Jack Merritt, 25, and Saskia Jones, 23, during a prisoner rehabilitation conference at Fishmongers' Hall near London Bridge
The inquests heard Usman Khan moved prisons six times during the first two years of his eight-year sentence for plotting a jihadi terror camp in Pakistan, following concerns about his behaviour in jail.
Phil Bromley said he and another probation officer, Ken Skelton, had concerns about Usman Khan attending a Learning Together event in March 2019, three months after his release from prison.
The Fishmongers' Hall killer did most of the preparation for his attack the day before he travelled to London, the inquest has heard.
Usman Khan bought knives from a market stall, had a haircut and shaved his body hair in preparation for martyrdom, the inquest was told.
Khan received the train ticket to London from Stafford on November 15 and made the first purchase for the attack five days later.
He went into the Tesco Extra on Newport Road in Stafford at 5.18pm to buy a roll of T-Rex gaffer tape, which he used to construct the fake suicide belt.
Two days later, on November 22, Khan went to TK Maxx at Friary Green retail park in Stafford at 4.13pm, where he bought a Dernier manbag that was later found in the toilet cubicle at the hall where he prepared for the attack.
The employee remembered that Khan looked suspicious because he wore sunglasses in the store and when she asked if he was having a nice day he 'just grunted at her.'
At 10.36am he withdrew £10 in cash from the HSBC in Stafford market and was called at 11.09 by someone from the Department for Employment who was helping him get a job, by which time he was apparently having a haircut.
Detective Chief Inspector Dan Brown, the senior investigating officer for Scotland Yard's SO15, said: 'Cutting hair and trimming beards is a common act of cleanliness, part of the act of martyrdom for extremists.'
At 1.11pm, he was at a shop called Trespass camping and survival store in Gaolgate Street buying an own-brand padded jacket in extra large for £49.99.
He had recently bought another padded jacket in large but Mr Brown said he believed the larger size was need to hide the fake suicide belt.
By 1.36pm, he was visiting Sports Direct also in Gaolgate St, where he purchased a pair of Nike Manoa work boots and a Sondico base core top for £14, both of which he wore to the attack.
From there he walked to Poundstretcher at Friary retail park where he paid for scissors and a mask, along with razors and eyebrow wax strips at 1.54pm.
The last of the items were paid for in cash. The scissors were found in the cubicle at the hall where they had been used to cut the tape that attached the knives to gloves he wore for the attack and the cycling-style mask was worn during the assault.
After the attack it was discovered that Khan, in common with other martyrs, had shaved all his body hair to prepare himself for death.
There was a second shopping visit to the same Tesco Extra store at 5.14pm when Khan bought another pack of the TRex gaffer tape to wrap the fake explosives on the belt.
The 4 pack of Beauty Line knives, which retailed at around £15, had apparently been bought on Stafford Market, although the seller was never found.
Khan used two in the attack, left one in his bag in the toilet cubicle and the last one was found at his flat, along with wiring from his X-box, a tubigrip bandage, and clingfilm that he had used to simulate a suicide belt.
Khan left his rented flat at 7.09am on November 29 and was at Stafford station by 7.18am, using the cash machine and going briefly into the toilets.
However he called Simon