Thought this was a Striped Hawkmoth initially but smaller moth and stripes are indistinct on wings.
No interactions present.
This doesn't look like any of the species on the British list. To confirm, this was found recently in the location you've added?
If possible, please don't release the moth, just yet. It could be something rather rare.
Also, please edit this observation to reclassify it as an 'invertebrate' so it gets seen by the right people.
This certainly looks to be something special if it was seen in the UK. I have added a possible ID having looked through pictures of all the European hawk-moths.
My blog: http://wolvobirder.blogspot.com
I looked quite closely at H. tithymali but decided that H. dahlii was probably a better match. The latter also seems most likely as a possible vagrant to the UK.
Who knows though - it could be something different entirely if it's an accidental import from outside of Europe!
I looked at both and came to the opposite conclusion. However, looking at them again now in the "light of day" I can't see why I would go with one over the other from the websites I provided as they are both very similar looking species.
I did a Google image search of H. dahlii initially and I think that is what swung it for me, but then we all know how perilous that can be as you are reliant on everyone posting pictures to the internet knowing what they have taken a picture of.
Should we perhaps open this up to the wider moth community or at least put the observation on the iSpot invert forum?
Yes, you've got to be careful with Google searching - the number of times I've found incorrectly ID'd stuff!
This site seemed quite useful:
Lat/Lng: 51.3453, 1.434
OS grid ref: TR392662