The WWG buildings all come in PDF format. I do tend to take them apart and reconstruct them using elements from different models and companies. The Fox Brothers frontage was put together in Photoshop using WWG and Fat Dragon along with some of my own original artwork.
I find that the WWG buildings are slightly over scale for 28mm (I think they are nominally O scale) so I print at 80% which brings them in somewhere around S scale.