The Milk and 21 Grams actor was spotted filming new movie The Gunman at the weekend on London’s Tower Bridge.
Crowds gathered and watched the action take place, which included a low flying helicopter, as it zoomed overhead in the scene.
In this new Bourne Identity-style blockbuster, Penn plays an international spy named Martin Terrier, who’s trying to avoid being killed by his former employees, attempting to clear his tarnished name so he can live peacefully with his partner.
Oscar-winning Penn will star alongside East End hardman Ray Winestone (The Departed, Sexy Beast), Idris Elba (Luther, The Wire) and Javier Bardem (Skyfall).
The Gunman will be released in 2014