Having just watched yet another Brad Angove video where he mentioned his love of Behlen products I did a quick google to see if you could get them in the uk.

Well the company that used to import them stopped a while back, but clicking a link of their homepage I found what they sell now.

https://www.eurofinishes.com/

The interesting part being that they have a tab for Guitar Finishes, which all seem to come from "General Finishes"

Don't know anything about the products as yet, but with the lack of choice in guitar finish options in the UK, I thought I'd mention it.