updated 08/30/2011 AT 3:00 PM ET
•originally published 08/30/2011 AT 4:30 PM ET
The Oscar winner, 72, took Shiloh, 5, Zahara, 6 and Pax, 7, out to stretch their legs on Richmond Green, a grassy area not far from their rental home in the London suburb.
“There was a cricket match on so they just stopped to have a look,” an onlooker tells PEOPLE. “Jon explained to the children what was going on [with the game] it was a really traditional English scene.”