The girlfriend of Jack Merritt was inconsolable as she arrived for a vigil dedicated to him and Saskia Jones who were both murdered in Friday's London Bridge terror attack.
Former University of Cambridge students Saskia, 23, and Jack, 25, were stabbed to death by 28-year-old convicted terrorist Usman Khan during a prisoner rehabilitation event they were both supporting.
Leanne O'Brien was pictured arriving at the vigil in floods of tears.
Dressed in black jeans and black jacket, she appeared distraught and clutched a pink, soft toy in her hands.
She was supported and comforted by the parents of boyfriend Jack during the event.
At the same time Boris Johnson and Jeremy Corbyn were at the remembrance service at Guildhall Yard in the capital.
A book of condolences has been opened at Guildhall Art Gallery, and members of the public have been invited to lay flowers outside nearby Mansion House.
The service in London was less than a mile from Fishmongers' Hall, where Khan launched his attack on Friday.
Around London Bridge Underground station this morning, several white boards had been placed with messages of support, including: 'Together we stand. An attack on any one of us is an attack on us all. Haters are not welcome. We are London and we won't fall.'
Khan, 28, from Stoke, was on licence and wearing an electronic monitoring tag when he launched the attack, which injured three others, after he was invited to the prisoner rehabilitation conference on Friday afternoon.
The event was organised held by Learning Together, a programme associated with Cambridge University's Institute of Criminology.
The attack has prompted the Ministry of Justice to review the licence conditions of every convicted terrorist released from prison, which Prime Minister Boris Johnson said was "probably about 74" people.
Mr Johnson has vowed to take steps to ensure people are not released early when they commit serious offences.
But the family of Mr Merritt, from Cottenham, Cambridgeshire, asked for his death to not to be used to justify introducing "even more draconian sentences" on offenders in a heartfelt tribute released on Sunday.
They said: "He lit up our lives and the lives of his many friends and colleagues, and we will miss him terribly.
"Jack lived his principles; he believed in redemption and rehabilitation, not revenge, and he always took the side of the underdog.
"We know Jack would not want this terrible, isolated incident to be used as a pretext by the government for introducing even more draconian sentences on prisoners, or for detaining people in prison for longer than necessary."
And in a tweet on Sunday evening, Mr Merritt's father David said: "Don't use my son's death, and his and his colleague's photos - to promote your vile propaganda.
"Jack stood against everything you stand for - hatred, division, ignorance."
Miss Jones, a volunteer with Learning Together from Stratford-upon-Avon, Warwickshire, was described as having a "great passion" for providing support to victims of crime by her family.
In a statement, they said: "She was intent on living life to the full and had a wonderful thirst for knowledge, enabling her to be the best she could be.
"Saskia had a great passion for providing invaluable support to victims of criminal injustice, which led her to the point of recently applying for the police graduate recruitment programme, wishing to specialise in victim support."
Khan, who was living in Stafford, was given permission to travel into the heart of London by police and the Probation Service.
Convicted of terror offences in February 2012, he was released from prison on licence in December 2018, halfway through his 16-year prison sentence.
He launched the fatal attack at the Learning Together event just before 2pm on Friday.
Armed with two knives and wearing a fake suicide vest, he was tackled by members of the public, including ex-offenders from the conference, before he was shot dead by police.
One of the three people injured in the attack has been allowed to return home while the other two remain in a stable condition in hospital.
No-one else is being sought over the attack.
