Glasgow and Ibrox Tramways
Unfortunately, photographs taken during the years of the Glasgow and Ibrox Tramway Company (1879-1891) are extremely rare, with just a single example showing a crew, and this is of such poor quality, that it is impossible to say whether they wore uniforms or not. During the tenure of the Glasgow Tramways and Omnibus Company Ltd (1891-1896), conductors would have worn the uniforms of that company (see link).
For a detailed history of the GT&OCoLtd, see: 'The Glasgow Horse Tramways' by Struan Jno T Robertson; Scottish Tramway and Transport Society (2000).
Horse tram drivers and conductors
Glasgow Tramways and Omnibus Company Ltd Horsecar No 286 captured somewhere in the general Ibrox area on an Ibrox-Rockvilla service - photo undated, but certainly taken between 1891 and 1896. Although difficult to make out in this photo, the driver is wearing the usual informal attire of a GT&OCoLtd horsecar driver (see link). Photo courtesy of the Tramways and Light Railway Society, with thanks to David Voice.