Re: The only thing stacking up here is the holding pattern
Then the further night-time reports (both sets of reports apparently from airfield personnel) So, rather dark. Being able to see and identify a drone would require it to be extremely close. Otherwise its just "lights in the sky moving in what appears to be a controlled manner"
I invite you to reconsider your assumptions.
[..] ...unless those in charge at the airport know something we've not been told.
It's hard to believe the airport operators, police, military etc aren't live-streaming everything they do on YouTube. It's 2018 for heaven's sake!