The choreography of the 10-second scene, getting all the extras in the exact right spots, was very precise, though it looks like a random crowd. “The filming for our scene lasted about four hours as the metro would be opening. However we did a rehearsal the night before for about four hours to ensure everyone knew their blocking. I’d say we did at least 20 takes. Over all, it went very smoothly and the combined crew of UK and Czech people worked well together,” actor Bradford said.