Do you have a local glazier? As it is bespoke you will need company to come out and measure first before manufacturing. If you cannot find anyone in Shropshire then I would try the adjoining counties. Some companies are prepared to travel for work. You may be able to get away with a rectular screen (tall) and a support bar. What is the distance between the beam and the floor? I am assuming that the shower is going to be fitted on the right with the head ceiling mounted? Great niche by the way.
There are several bespoke shower screen manufacturers on Pinterest. Obviously you need to do your research and read reviews etc but may be worth a look. Here’s a couple.
Isla Cherry
Sonia
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