This long-legged aphid with long siphunculi struck me as unfamiliar and possibly distinctive. One seen, off Buddleia.
No interactions present.
Thanks Alan, that looks like a good match. I can't find a checklist or ID resources for British Macrosiphum online so can't take it much further at the moment.
I don't know if these help -
Lat/Lng: 51.0, 0.4
OS grid ref: TQ7525