The enchanting but often overlooked hoverflies are out on the fennel in our dry border. Great pollinators. We think the first image is a Syrphus ribessi https://www.discoverwildlife.com/how-to/identify-wildlife/how-to-identify-hoverflies/ This dry border contains lots of self seeding plants including Cephalaria gigantea, Foeniculum vulgare, Verbena bonariensis. The ornamental grass in the background is Calamagrostis 'Karl Foerster'. Its a wonderful border full of movement, I'm keeping a look out for a Hummingbird Hawkmoth, not seen one this year in our garden.