fly 1

fly 1

Observation - fly 1. Description: This fly was photographed resting on wooden but was in an awkward position so could not get a good shot.Though I would take photo before trying to pot it which was just as well because it escaped. At first I thought it was a Hornet by its colouration but

This fly was photographed resting on wooden but was in an awkward position so could not get a good shot.Though I would take photo before trying to pot it which was just as well because it escaped. At first I thought it was a Hornet by its colouration but was soon seen that it was not. It was however quite large, being about 20-25mm in length.
I have not seen this insect previously and an id would be appreciated