Interview with police officer who was injured as he fought off London Bridge terrorists

The transcript describes a violent encounter where the narrator witnesses an attack, flees, and then confronts the attackers. The narrator describes the attackers, their actions, and the defensive measures taken, including using a bat. The narrator suffers an injury but reacts instinctively to block a knife attack.

How did the narrator react when he was attacked from the side?

What was the narrator's instinctive reaction when he saw the knife coming at him?