Ongoing, feel free to contact me with omitted species and evidence of their availability past or present in the UK. Thanks, Viv.
Acherontia atropos (African death's head hawkmoth) is the most widely known of the three species of death's-head hawkmoth. Acherontia species are notorious for a vaguely skull-shaped pattern on the thorax.
Sphinx ligustri, known as the privet hawk moth, is a species of moth found in most of the Palearctic ecozone.