We had a few dramas with it on that trip. Luckily there was another photographer who had stayed at Locksley and he saw it land.
I noticed the sound of the drone on Bevan’s video, where 5917 is turning on the Lidsdale triangle. I hope the operators are mindful of the annoyance this thing can cause to videographers and sound recordists.
PS. When approaching us at Locksley, at first we thought the wayward UAV's sound was the dynamic brake of another train from the west.