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It's a bit darker than some I've seen, but I think this must be the caterpillar of Comma. Raspberry is an unusual foodplant for it.
Entomologist and biological recorder
thanks for that have seen a few comma's around and looking again i think it was on currant bush
Yes, I think currants are recorded as foodplants, although still not very frequently.
Lat/Lng: 51.4, -2.6
OS grid ref: ST5970