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I originally thought I was viewing the ordinary Lime hawkmoth larva in ukleps. It was actually the hybrid suggested above I was looking at. The pre-pupa image does appear to bear a close resemblence to your caterpillar.
I am no expert on the hawkmoths even less so the crosses but this looks very similar and I hope it is correct- awaiting agreement or revision......
Great IDing resource available at ukleps:
Lat/Lng: 50.8, 0.0
OS grid ref: TQ4109