Some kind of fly

Some kind of fly

Observation - Some kind of fly - UK and Ireland. Description: I only noticed this fly after uploading and reviewing my photo's. Can anyone tell what it is. The pic has been cropped heavily to show detail. (It is on a Marsh Marigold flower)

I only noticed this fly after uploading and reviewing my photo's. Can anyone tell what it is. The pic has been cropped heavily to show detail. (It is on a Marsh Marigold flower)