Scarce Chaser (female) (Libellula fulva)
Considering this isn't a common species by any means in the UK, it was great to stumble across them in two local Sussex sites, this summer.
The female in particular is very distinctive, as seen in this very close-up accompanying video :
The male I shall post separately.
The scarce chaser is a species of dragonfly. The adult male has a bright blue abdomen with patches of black, while the adult female and juvenile male each have a bright orange abdomen. It is about 45 mm in length with an average wingspan of 74 mm. It is distributed throughout Europe. This dragonfly is considered a species of special concern in Great Britain due to loss of its specific ideal habitat.