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Hayley, again lovely picture.
Steve is probably the man for this but I would say YOU can help a lot by photographing from a few angles, not just the pretty one!
You could specially shoot the mouth opening, as I think that would help ID.
A coin in one picture would help with size, a small rule would be better - certainly if you are going to specialise.
I think it ALWAYS helps if YOU try to identify it yourself - being wrong won't matter.
You could do worse than start your ID trail here -
Forgive me Ian (Thistle)!
Now see mine http://www.ispot.org.uk/node/350763
Lat/Lng: 46.2, 2.2