Hi Paul, thanks for the reply. I have a few of the fern decorated glasses, this is the first one I have seen with this type of stem which is why I was curious as to the age, thought that may indicate a slightly earlier date. Don't think you need to go to specsavers it is difficult to see particularly on the photo.
The shop has obviously received a large donation from a collector recently, lot's of Victorian drinking glasses, picked up a rummer as well as this one here, slag glass, opaline glass, vsart/ysart type stuff, all sorts really. Will be returning over the next few weeks to see what else they have.