Gulabi in Strathbungo, though open Wed - Sat have both colour and B&W. Merchant City Cameras have/had Kodak Portra 400 and 800 and Ilford, Jessops beside Buchanan Galleries have Ilford and Fujifilm. I haven’t found Kodak Gold in Glasgow yet but I just bought some in Edinburgh (Morningside) from Cameratiks.