Stick Decal Material - Where and what to order in the UK?

As the topic describes, I’ve recently replaced all my buttons on my Hori VX SA, and have some artwork ready for the decal change - however I have no idea what material I should be using, and if I need superglue or other bonding material to connect the decal.

Additionally if people want to provide some links to people who print this artwork on the material required, please ensure it’s available to UK.