1905 valuation rolls
Bank office, 3 Bruce Quadrant, Main Street
proprietor: Trustees of the late Gavin Girdwood, baker
tenant: Clydesdale bank, Glasgow, per Charles Smith, bank agent
occupier: same
(no 3 also has two other occupants, a shop (chemist), and a house.)
There is no mention that I can see of no 7, but some entries for Bruce Quadrant have no associated house number..
At no. 1 Gavin and John Girdwood, bakers, are tenants and occupiers (proprietor as no. 3) Looking at the photo in reply #5 I think I can make this out on the sign of shop on the corner.