But this time they didn't cross the North Sea in Viking ships, they came by airplane from Minnesota! It's all part of the fun and festivities of the NFL International Series!
Minnesota Viking WR Jerome Simpson (pictured above) and the rest of the Vikings taught the London kids how to play the kind of football where you can use your hands! There is serious work to be done as well, as the Vikings clash with the Steelers at London's Wembley Stadium this Sunday.
Check out the game between the Vikings and Steelers live from London on Sunday at 1:00pm ET on CBS.