SHOCKING moment an alleged knifeman appears to attack two police officers in broad daylight.
Dramatic footage shows a man clad in a black jacket and headgear appearing to hit out at one cop, who is holding his legs.
He then circles round and pulls out a large black object, seemingly prompting the other officer to use spray while talking on his radio.
The first cop, who had been on the floor, then uses his taser - before the alleged attacker appears to try and rain down more blows.
He eventually falls over yards from a motorbike lying on the ground - as a brave member of the public runs to help.
The video was shot by roofer Robert Ball, 31, in Croydon, south London on December 30, at around 10am.
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