Can't find exact match but this looks quite possible, in France? https://www.carreauxmosaic.com/collection-motifs-carreaux-ciment/formes.php This manufacturer makes irregular polygon shapes but is in US. https://leanigel.com/collections/specialty-field-tile Perhaps ask Domus or Baked Tiles if they could put it together as they do some irregular shapes? https://www.specifiedby.com/domus-tiles-ltd/puzzle-porcelain-style https://www.bakedtiles.co.uk/ Where did you find the photograph?

Sadly not, are these the British ceramic ones that have been discontinued? They still do them in beige annoyingly do you have a photo of the room? Just wondered if you could do anything else

I’ve seen some gorgeous morrocan wall tiles at Topps Tiles as I want to update my kitchen a weeny bit. I’ll try it out, but I already know they will look amazing simply because I love them. If you get that feeling then you know it’s the right choice for you. 😊

Claybrook does something similar I don't know if you have already come across it in your search. Claybrook Zeze Orchid