School shootings, mosque attacks, extreme misogyny and far-right costumes - that's just some of the content ITV News found British teens being exposed to on the world's most popular game app - Roblox. Now, the company is taking action, introducing new age verification checks.

But will these measures stop teens being shown extremist content?

Digital Reporter George Hancorn uncovered white supremacy on the app and tells Lucy Watson what you need to know.