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A worn female Adela reaumurella - doesn't look hairy enough around the head for rufimitrella. Female reaumurella can/do have yellowish hairs on the head. (See the 2 pictures on UKMoths) Size would help.
ca 12mm long
12mm puts it a bit on the long side for rufimitrella. It looks as if a copy of this entry (http://www.ispot.org.uk/node/142507) has been identified as reaumurella
Lat/Lng: 50.9397, -0.0196
OS grid ref: TQ392174