Interesting report - a few things here worth unpacking before we jump to conclusions.
The hovering behaviour is the detail I'd focus on first. Drones can hover obviously, but the tree line context matters. How far out was it approximately? Anything beyond 400m and consumer drones start to struggle with visibility at night, so if it appeared sizeable at distance that's worth noting.
What I'd ask:
Duration - how long did it hold position?, Light configuration - static, pulsing, rotating? Single colour or multiple?, Sound - any low frequency hum, or complete silence?, Movement when it left - did it accelerate away or just... disappear?
I've been doing amateur sky-watching from the north Cornwall coast for about two years now using a pair of Celestron Cometron 7x50 binoculars and a basic Sony mirrorless on a tripod. The amount of stuff I initially couldn't explain that later had mundane answers is genuinely humbling - atmospheric ducting can do strange things to distant light sources, and military/commercial flight paths aren't always obvious to civilians.
That said, sustained hovering with no sound is the combination that tends to resist easy explanation in my experience. Helicopters make themselves known acoustically.
What county are you in? Proximity to any RAF bases or MoD land is relevant context. Parts of the UK have unusual aerial activity that's entirely classified but entirely conventional.
Post any photos or footage even if they're low quality - we can at least start ruling things out methodically rather than speculating blind.