Anyone know of British Library white crockery with original mcripts' extracts (Coleridge,Wilde,Mozart) on?

I came across some pieces (in a display cabinet at Portmeirion) of white British Library crockery with quotations/segments from original literature and music mcripts printed on it. It was gorgeous. But when I got home, I couldn't find a single piece of info about the range online. Does anyone know about it? It is an old range? Can I buy it anywhere? Thanks!