A new hoverfly was settled on the sallow leaves on the window box the other day. It had gone by the time I got the camera, but I re-found it on some nearby hogweed flowers.
The larvae of this species live in the hogweed roots and it is generally quite common in the English countryside at this time of year.
The flowers on this particular hogweed plant are pale pink as opposed to the normal white. This is because the backs of the petals are pink.