Unknown insect (One of Three linked Observations) - 4 pics

Unknown insect (One of Three linked Observations) - 4 pics

Observation - Unknown insect (One of Three linked Observations) - 4 pics - UK and Ireland. Description: A large colourful bee and another insect were fighting by these holes. There seemed to be one type of colourful bee plus I am not sure whether the other insects are the same or not. A couple times I saw a fight between the large bee and I think one of the

A large colourful bee and another insect were fighting by these holes. There seemed to be one type of colourful bee plus I am not sure whether the other insects are the same or not. A couple times I saw a fight between the large bee and I think one of the other insects. I am not sure whose hole it was. The hole was on a South facing slope with earth, stones and a little grass.