Hi Jon and Merry Christmas to everyone there at the CFZ.
I'm pretty sure it's a leaf-footed bug - one of the true bugs - but without more information, such as where the picture was taken, that's as far as I would go. Some leaf-footed bugs take on baroque shapes but here are two of the more subdued examples. These two have similar markings.
And strangemouse (a young lady called Victoria Burton) has identified it as to species
Well done both of you. I thought that I was the only person who thought about invertebrates on Christmas Day!