I found that my sage had been munched away but this armour-plated bug. Do click on the middle picture to see it's hammered metal casing. A fine specimen. It's so cool, I found it hard to decide if I liked it more than my sage! I think by it's name it's probably safe to assume it's keen on rosemary too.
It has been raining now in my corner of Surrey and the vegetables and I have been rejoicing. Water butts are full! Thank you x