Cerceris Wasp? Scotland

Cerceris Wasp? Scotland

Observation - Cerceris Wasp? Scotland. Description: I can't determine what wasp this is, so any help will be much appreciated. A close match is Cerceris Rybyensis, but the markings are different as is the leg colour. The photo of the Drone fly includes the plant the wasp was on; I don't know the plant

I can't determine what wasp this is, so any help will be much appreciated.
A close match is Cerceris Rybyensis, but the markings are different as is the leg colour.
The photo of the Drone fly includes the plant the wasp was on; I don't know the plant id.