Deighton Pierce Glynn solicitors, the legal firm representing Duwayne Brooks have published a document reportedly authorising the use of 'covert audio recording'.
Police chiefs admitted on Friday authorising the secret recording of at least one meeting involving the friend of murdered teenager Stephen Lawrence, his lawyer said after the meeting.
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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.