Here's a link to the Amazon ones I got, maybe you could get them in the UK. I've done both dirty pour and the petri dish and they've both worked with the resin it comes with as well as the inks. 🤷‍♀️ Sorry I couldn't be more helpful!

Epoxy Resin and Resin Pigment Set - Crystal Clear Epoxy Resin, 20 Vibrant Color Liquid Epoxy Resin Dye, Resin Art Supplies Starter Kit for Art, Crafts, Tumblers & Jewelry Making, Molds, Coating https://www.amazon.com/dp/B0892BXVTW/ref=cm_sw_r_apan_glt_fabc_BRN1BGHZ6DFXYJM7E4ZE?_encoding=UTF8&psc=1