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Could it be a Criorhina (hoverfly)? For a bumble bee, the abdomen looks very broad compared to the thorax. It is a pity you can't see the antennae, but that also fits with it being a hoverfly.
No, it is not a hoverfly. It is Bombus (Psithyrus), a cuckoo bumble-bee. Criorhina are excellent bumblebee mimics, but they are not this good.
Lat/Lng: 52.1, -3.4
OS grid ref: SO0451