Glass tiles

I recently had to visit a builders merchants for some copper pipe, and whilst I was there I bought some plumbing fittings as part of a gradual bathroom upgrade. We still have some lead pipes under the bathroom floor that I would like to replace.

I also need to get a shower and then work out where I am going to fit it. I would be quite keen on glass tiles to separate off the shower, but I don't know if we have the room for it as I definitely want to retain the bath...