One woman sparring at Miguel's Boxing Club in Brixton told London Tonight that the sport suited her lifestyle as a mum.
Heather Christian said it fitted in around other commitments and provided a good outlet for stress.
More top news
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.
A list of results for London Mayor and the London Assembly