That feeling when you cant stop replaying it in your head - yeah that stays with you. What colour was it roughly? And did it make any noise at all?
I've been interested in BEK cases mostly but I do follow a fair few UAP reports from the Manchester area and there's been a surprising number of sightings near wooded spots over the last few years. Not sure if theres a connection to anything but the treeline detail stands out to me.
Describe it as best you can while its fresh. Even the small stuff matters - how long it hovered, whether it moved at all, whether the trees or animals reacted. Post everything you remember, others here will help you work through it.