I am not certain who WT&Co were, but I suspect that it stands for W Trickett & Co. The date letter q indicates that the spoon was assayed in Sheffield in the assay year 1933/1934.
Thank you, I appreciate your help.
Here is a site where one can compare Tricketts mark and yours… they have both
Compare my user name with the name of the site …
Note that I have still not positively identified this maker’s mark. I have drawn the inference from the last date for which I have seen Walter Trickett’s WT mark and the earliest date for the WT&Co mark. In addition Trickett seems to have specialised in the production of souvenir or award spoons for shooting clubs and I have seen the WT&Co mark on similar items.