I could be wrong, but the silver plate mark looks just possibly as though it might be Walker & Hall - the S standing for Sheffield. They started around the 1850's and some time in the 1960's joined up with Mappin & Webb and Elkingtons, and am now certain the No. is nothing other than a pattern No.
Doesn't remotely help with the glass, but thought it might be of interest, and if they are still in business in some guise or other, then it might be possible - using that pattern No. - to find out the date/period of use.
Of course, if it's not Walker & Hall, then it's back to the drawing board.
