I got Along Great Western Road from my dad for my Christmas and had something confirmed which I'd completely forgotten about...
After I went to go and photograph the Charing Cross and St George's Cross Mansions, I walked up to Kelvinbridge cos I had a notion that the building over the bridge from the subway (where Roots and Fruits and Felix and Oscar are) was also a "mansions". I couldn't see any signs on the building to confirm this, so I let it be.
Flicking through AGWR I found the following:
Miller* also designed the richly-detailed Caledonian Mansions alongside Kelvinbridge station. The mansions were not, as is popularly believed, built as an annexe to the Caledonian's Central Hotel. Recent research in the railway company's archives shows that the shops and the flats above were built purely for rental income.
*James Miller, of Botanics, Kelvinbridge, and Wemyss Bay stations fame.
My pics aren't the best, as the light was kinda going and people kept tutting at me when I was looking up and getting in their way! I'm going to go back and take some better ones, the back of the building was nice too.