Four large wings and enormous eyes help to make this one of the most efficient hunters of all time. This was one in the UK, tho we have a similar species in Hong Kong.
These dragonflies have their own territories which it guards against intrusion, which can lead to ariel battles. I imagine this one was involved in one, as you can see the pieces torn from his wing.
They live for about a year after they emerge from their larval stage which can take one to two years.