Unknown Insect

This looked slightly unusual from the insects we normally see in the garden. I've tried looking it up and my best guess is a great pied hoverfly. 
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Lands End to John O'Groats 1000 Mile Virtual Challenge Update

Day 139 -  County Durham.  5 miles walked. 575.2 miles completed


Moving away from the River Tees I passed through Langdon Beck and finished in the wilds of the North Pennines