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"It was just absolute carnage," Insp Adrian Dack said.

Insp Dack said every time a wheelie bin was set on fire and thrown towards them, crowds cheered.

Paramedics had to navigate around the disorder to reach the officer, "but they came straight into the officer and started getting him right," said Insp Dack, "my mind had gone, I would say, for that short period of time".

Ch Insp Kelsey and Insp Dack's colleague was treated in hospital and continues his recovery.

It was one of Insp Dack's best friends.