<https://www.papermilldirect.co.uk/#identity>
<http://schema.org/description>
"Papermilldirect is a leading UK seller of a range of craft paper, card and stationery for educational institutions, businesses and consumers."
<https://www.papermilldirect.co.uk/envelopes/c7-essentials-black-envelopes-100gsm-81mm-x-111mm>