From the 1929 directory (on Ancestry and on CD), alphabetical list of Smiths:
William Smith, baker, 11 Emerson St, Hightown (near Cheetham)
William Smith, baker, 7 Garden St, Ancoats
William H Smith, baker, 43 Bannerman St, Cheetham
William Smith, shopkeeper (doesn't say what kind of shop, so could be a bakers I suppose)
426A Mill St, Bradford
110 Temple St, Chorlton on Medlock
and several just down as Householder or just the name:
William Smith, 37 Louisa St, Openshaw
William Smith, householder, 104 Ackroyd St, Openshaw
William Smith, householder, 33 Rock St, Openshaw
In the street directory under Great Jackson St, the only Smith was Donald, a wallpaper dealer.
Was there a wife that might have had the shop listed in her name?

Barbara