Recently moved into a house where one curved shower door was missing on a 900x900 shower enclosure. It wasn’t possible to buy one replacement door so we had to purchase an entire shower enclosure. We bought the following ELEGANT one from Amazon for £177 and have used both matching doors, fitted to our existing enclosure. Therefore, we have two glass side panels and one spare shower door available. See this link for more info: https://amzn.eu/d/do0mHzp. It seems so wasteful to tip as it’s brand new and ‘Easy clean’. I hope someone might have a use!

Shower enclosure 2side panels &door (SK10)