seemed to be following other fly/bee from flower to flower just hovering next to it
No interactions present.
Definitely a species of Eristalis, but not sure which one - looks too small, neat and brightly coloured to be E. tenax. E. interruptus is one possibility, but I can't be certain. The one hovering above is a male (eyes meet over top of head), so it was possibly following a female.
And in fact I've just found in Alan Stubbs's hoverfly book that "males of E. interruptus may be seen hovering over settled females, often displaying a hovering jerky dance", so it looks like you may have captured this courtship behaviour - fascinating.
Entomologist and biological recorder
yes can see what u mean, thanks
Lat/Lng: 51.4, -2.6
OS grid ref: ST5970