Hoverfly on bramble flower, in woodland margin, stripes on thorax and abdomen orthogonal to each other.
No interactions present.
Good photo with nearly all identification features for pendulus visible. Such as one third of hind tibia black, and frons dusting stops short of ocellar triangle (area containing the simple eyes). These rule out hybridus.
Also black stripe down midline of face rules out trivittatus.
Only thing I can't make out is whether male or female. Unlike in most other genera, Helophilus has eyes separated on top of head in both sexes.
Definitely female, as the eye margins are not parallel at all on top of the head.
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Lat/Lng: 50.9169, -0.1487
OS grid ref: TQ302146