Bit of a long shot but did anyone on the Durham or Yorkshire side of things notice anything unusual around that same time? I know we're nowhere near Lake Michigan obviously but I've been tracking some weird aerial stuff over the northeast lately and I'm wondering if there's any kind of pattern forming across a wider area.
Last Thursday I was out late walking the dog around 11:15ish and spotted three lights moving in a loose triangle formation, completely silent, no navigation lights you'd expect from a plane. Gone within about 40 seconds. Could be nothing but the timing matching your sighting is nagging at me.
Has anyone cross-referenced this with the ley line maps for the Great Lakes region? There's some interesting convergence points in that area and I've always thought theres a correlation between UAP hotspots and significant ley intersections. Probably sounds daft but worth asking.