Verify’s analysis of five social media videos of the fight, included one video, which appeared to show the officer who stamped on the man’s head then approaching another man, stamping on his thigh and hitting him on the back of the head with a Taser.
Another officer appears to pepper-spray bystanders who are filming the incident.
The CPS said it had “concluded no charges should be brought against any officers” after examining evidence, reviewing “expert opinion” and taking into account police training.
Two police officers are still under investigation by the Independent Office for Police Conduct (IOPC) watchdog after GMP conducted its own inquiry.
One officer had been suspended but GMP Chief Constable Stephen Watson said he was now lifting that suspension.
He said he “welcomed” the CPS’s decision “to take no further criminal action against serving officers”.