[oxycera]

You can easily tell it's a female as the 12 antennal segments are countable.
N.panzeri is also common although I don't know the relative frequency of these species in Dorset.
N.panzeri is usually a little smaller and has black setae on the labrum, clypeus, hind tibia and mid femur. On flava these are yellowish. Obviously it is not possible to be certain about these characters from the photos.