Mayor Boris Johnson will tell the Home Affairs Select Committee later how public confidence in policing can be restored.
It comes after revelations that undercover police officers sought to smear the family of Stephen Lawrence.
Met Police Commissioner Sir Bernard Hogan-Howe will also be appearing.
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With just three days to go until polling stations open, representatives from all parties were out in force across the capital today.
The garden above the Canary Wharf Crossrail station is now open to the public.
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