You may not be familiar with Artex - it’s a strange ceiling treatment, widely used in the UK in the 70s. It’s a textured surface treatment, originally made with a mix containing white asbestos among other things. The company started in 1935 and named itself after Artistic Texture “reflecting the creative nature of the product”. https://www.artexltd.com/about-artex/history Alternative suggestions are that it was named after Asbestos Reinforced Textured coating, which warns of the health hazard that can come if it is sanded or carelessly handled on removal).

Really not my thing, but the care someone took in applying it to every ceiling in the house warrants respect. This was a hand-made, hands-on sort of finish. Thought I’d share some images (excuse the odd v grubby cobweb!).