Newham Council and the Metropolitan Police have joined forces to target companies that are breaking the law by not paying the National Minimum Wage.
Labour leader Ed Miliband and London Mayor Boris Johnson called for firms to pay the Living Wage a few days ago.
Mayor of Newham, Sir Robin Wales, is backing their call but argues we need to start by fighting the rogue employers who offer only poverty pay.
He wants the law changed so that councils can tackle the issue directly and quickly rather than bringing in third parties later for enforcement.
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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.