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helophilus hoverflies do not have eyes which touch in the males, like most hoverflies. But, the males have the eye margins parallel atop the head, whereas in females they diverge. So, this is a male. A male hybridus would not have the black bar across the rear of tergite 2 (what appears to be the first abdominal segment behind the thorax). So, this is pendulus.
If it were a female, the pattern of banding would be the same as in pendulus, pretty much, and then you are looking at amount of dark on the hind tibiae...more tricky.
There is also the lemon-yellow H trivittatus to consider.
My Flickr photos...
Lat/Lng: 51.2, -1.0
OS grid ref: SU7451