Five years ago the life of Eastenders actress Brooke Kinsella was torn apart when her 16-year-old brother Ben was killed in a knife attack after a night out in north London.
Today, after years of campaigning on knife crime issues, Brooke has been named as a new ambassador for the charity Victim Support.
Brooke and Javed Khan, chief executive officer of Victim Support, joined Nina in the studio.
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Before the final declaration on Friday, the Conservative candidate looked set to lose the City Hall race to Labour's Sadiq Khan.
The Tooting MP has been the frontrunner in the counting process ahead of Tory challenger Zac Goldsmith.
It's not just London where elections have been taking place today. There were council elections taking place across the home counties.