'Sid' commented: "Possibly Juncicolella,due to size". Can't find any photos online but the drawing in MoGBI is of a very grey moth.
Edit: confirmed by dissection as Coleophora flavipennella
These are moths trapped in my Cambridgeshire garden that I have been unable to identify. If you can help please leave a comment or e-mail me at david.a.griffiths@btconnect.com.