Chrysotachina sp. (pe-taxon #03)
This little tachinine fly (7mm) is a very beautiful blue metallic colour, which suggests to me that it might belong to the genus Chrysotachina but I haven’t done any research yet so I could be wrong – it is certainly smaller than most Chrysotachina.
EDIT (Monty Wood, 26/9/2010): This is indeed a Chrysotachina sp.