Current workshop area tally is 205.82m^2. The working clearances for the woodwork room really pushed it up. Still does not include the general workshop, digital & design, finishing/drying and some sundries (like space taken up by walls).
If it comes in under 280m^2 it avoids Sunday trading laws for sales. A small shop is one that measures up to and including 280 square metres.
I don't know if this covers access-services. I don't think gyms, for example, are held to Sunday opening hours.
I'm hopeful that worst-case it would just mean we couldn't sell any materials for all of the Sunday opening hours. I think this is business-advisor territory.