Thanks to @RyanClarkNature it was identified as a male thick legged flower beetle, or to give him his more impressive title Oedemera nobilis. They feed on pollen and only the male has these fantastic thighs.
Slightly higher up in the garden canopy was this green shield bug, Palomena prasina. They are sometimes referred to as stink bugs as they make a nasty niff if they are bothered. It eats sap and leaves. They are not to be confused with the Green Shield Stamps that elderly relatives collected when shopping at the Co-op, which was an early loyalty scheme.
What, you are wondering, is the difference between a bug and a beetle? It seems that our American friends call all crawly things bugs. However, to be technically correct, bugs pierce their food with a proboscis and suck it up whereas beetles have mandibles for biting and chewing. Also a bug’s wing casing closes diagonally whereas a beetle’s is straight. So Americans should stop saying ladybug and the British should stop saying ladybird; it is a ladybeetle.