Tiny plump bird with green back feathers, pale grey underside/throat and bright yellow orange crest on top of head. Smaller than a wren.
No interactions present.
Forgive me for being pedantic, I’m nearly on the point of agreement. What differentiates your sighting from a Firecrest?
Lat/Lng: 53.3596, -2.1914
OS grid ref: SJ873847