Did I just film a UFO?

I was shooting clips for my indie film when something shot through my frame. I didn't notice it on the day but saw it while editing. At first I thought it was a bug, but noticed it was behind the fence and quite far away. I shot this on my Canon 5D MKII with a 50mm FD lens.
Film Trailer 1: https://youtu.be/ALBk5ADWy1c?si=vkIWbOlIX9K8SXy7
Film Trailer 2: https://youtu.be/Pwpv1eNapDg?si=JRJCa1DqrxRauIAC
Crowdfunder: https://www.crowdfunder.co.uk/p/idle-hands-community-film?fbclid=IwAR3xxlTEgyFEynoveuBzt-jE1eOhn3oQI6eUye_G__rtjLrl1LvhLMsFJUg
Facebook: https://www.facebook.com/idlehandsfilms