Certainly isn't a vine weevil - wrong shape, particularly the head. Much more likely to be a species of shield bug.
@Accy cyclist, do you recognise the villain from this identity parade?
Do you reckon it thought, 'looks like there's plenty of space in there to make myself comfy.'
at least you're not this guy: "During this trip Speke, marooned on an island, suffered severely when he became temporarily deaf after a beetle crawled into his ear and he tried to remove it with a knife."There I was ...