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Another nice shot - clearly shows the reddish/brownish tinge on the 'wasp-waist', plus the dusty-yellow colour of the other abdominal bands - also the position of the cross-vein that makes it this genus,
Many species of conopid are parasioids on bumblebees, laying their eggs into the abdomen of the adult bees. I haven't checked up on this particular species but I assume it has similar behaviour. The bees are eventually killed by the fly's larva devloping inside them.
Entomologist and biological recorder
This one is a parasitoid of several Bombus species, plus Vespula rufa,
Lat/Lng: 52.5, -1.2
OS grid ref: SP5497