Just managed to take this insect's photograph as I got myself ready for an early team-meeting this morning, (as in the changed time of this post).
This is a Common Darter Dragonfly - very common indeed in the UK (obviously the most common Dragonfly you are therefore likely to see on your travels around these islands).
The Common Darters roam far from their still-water breeding grounds - often perching on shrubs, fences and even the ground.
Adult males are red in colour (or a red-brown anyway), with a slightly constricted abdomen - immature males and females are tan in colour. I think this one is probably an immature female - no definitive abdominal constriction (not male) but small enough to be immature.
NB. Both sexes (and young) have dark brown / black legs coloured yellow on the outside - you can clearly see that feature in my second photo.
Our third species of Odonata (Dragonflies and Damselflies) in the garden so far.