Hoverfly?

Hoverfly?

Observation - Hoverfly? - Global. Description: Several of these on Hawthorn blossom along the coast at Sidmouth Devon. Looks like a Hoverfly, but not sure. Any ideas please. Leucozona?

Several of these on Hawthorn blossom along the coast at Sidmouth Devon. Looks like a Hoverfly, but not sure. Any ideas please. Leucozona?