If you saw a man running from the police, you#8217d probably just stand back and watch the chase go down, right? Well, that#8217s not what this British bystander did during a recent foot chase in London. He intervened. And there#8217s video footage.

The bystander, who police have not been able to identity, simply stuck out his foot to trip the suspect, allowing officers to catch up and arrest him. Kingston Police tweeted the video clip and thanked him for his help:

The Brief Newsletter Sign up to receive the top stories you need to know right now. View Sample Sign Up Now

Oh, and if you#8217re wondering if this bystander could get in any trouble for tripping the man:

Contact us at editors@time.com.