One of the two victims killed in the London Bridge terror attack has been named as 25-year-old Cambridge University worker Jack Merritt.
Mr Merritt was a course co-ordinator for the charity Learning Together programme run by the University of Cambridge's Institute of Criminology.
He had been hosting a conference at Fishmongers’ Hall when the carnage took place in central London on Friday.
The conference was attended by Usman Khan - the person named by police as the suspected attacker.
Mr Merritt has been described by his father "beautiful spirit who always took the side of the underdog."
After graduating Law from Manchester University, he went on to undergo further education at Cambridge University.
His work with the charity was described as "bringing students in Higher Education & Criminal Justice institutions together in transformative learning communities”.
The initiative had students at Cambridge and students in prison study together and embodies the belief that every person is capable of rehabilitation.
He said: "Jack spoke so highly of all the people he worked with and he loved his job.
"I know his colleagues are in shock- please look after each other at this terrible time."
He added: "My son, Jack, was killed in this attack, would not wish his death to be used as the pretext for more draconian sentences or for detaining people unnecessarily.
"R.I.P Jack: you were a beautiful spirit who always took the side of the underdog."
Mr Merritt's father has also been critical of recent cuts to police officers and prison and probation budgets which he said had been "decimated" since 2010.
A woman was also killed in the violence and a dozen others were injured when Khan, a convicted terrorist, went on a knife rampage.
He had been wearing a hoax suicide vest and was eventually shot dead by police on London Bridge.
It is believed one of the event organisers Ruth Armstrong, a part of Cambridge's Criminology faculty, tried to calm Khan down before he launched into his tirade and brandished two knives.
Khan had been released from prison 11 months ago after serving time for conspiracy to cause explosions and other terrorism offences.
The al-Qaida inspired plot targeted sites such as the London Stock Exchange, the Houses of Parliament and the US embassy, as well as religious and political figures.
Although he initially denied the charges, he and his eight accomplices pleaded guilty in 2012 and Khan was given an indeterminate sentence.
The sentence was then changed to a 16-year sentence by the Court of Appeal
The 28-year-old was on licence and wearing an electronic monitoring tag when he attended the prisoner rehabilitation organised by Jack and his colleagues.
Members of the public who chased Khan down before officers intervened have been called heroic by politicians, the public and The Queen.
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