Right, this is exactly the kind of report that needs proper documentation before the details start fading.
First thing - did you note the exact time and duration? Even a rough estimate matters enormously for cross-referencing other sightings in the area. Wiltshire gets a surprising amount of activity around agricultural land.
A few questions worth thinking through:
Was there any sound associated with it? Hum, static, complete silence?, Did it maintain a fixed altitude or was there any vertical movement?, Any effect on the surrounding area afterwards - flattened crops, unusual odours, dead patches?
The cornfield element is particularly interesting. There's a documented correlation between UAP activity and cultivated land that doesn't get nearly enough serious attention on here.
I've been running a Bushnell night vision setup in my back garden for about eight months now and the amount of unidentified movement I've caught over open farmland nearby has genuinely surprised me. Most turns out to be conventional aircraft or wildlife, but roughly 15-20% I still can't satisfactorily explain after checking FlightRadar24 and local wildlife reports.
Would strongly recommend grabbing a notebook and writing down every detail you can remember right now - colour, shape, approximate size relative to landmarks, how it departed or disappeared. Memory degrades fast and the specifics matter.
What general area are you in? Others here might have corroborating reports from the same region.
