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There will be differences, obviously, but I don't think they are obvious at a casual glance. I don't think this one is sexable from the photo' (but could well be wrong).
I think she's a female. A male would have a wider head. Females also have two small bumps on the head between the eyes which a clearer photos would show. Males have larger mandibles with distinctive spurs on them.
Lat/Lng: 52.0, 0.1
OS grid ref: TL4845