Robbie Hughes' mother Maggie spoke to London Tonight after his attackers were found guilty of assault in Crete.
Robbie, the former Oxford United footballer, was left with brain damage after being attacked while on holiday.
Maggie said after the verdict: "There's no anger, there's no sadness. We're all celebrating. It's just a wonderful feeling."
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Figures released this week show a sharp rise in the number of people living on London's streets.
Newly released emails to a Muslim campaign group reveal Mohammed Emwazi felt "controlled" under the watch of the security services.
Tributes have been left in Caledonian Road in Islington where 15-year-old Alan Cartwright died after he was stabbed.