I have seen them quite a few times down South Betsy over the years. But quite a lot up at Whitby and other locations north of Watford as well. I don't think we're quite as lacking as you suspect. (And yes, I have heard some of the girls from the family as well as other family members singing). I'm still waiting to try and get a photo of them drinking Tea on Friday. Won't get the chance to get at the ice cream though unless Chris and Helen bring it to the club on the night.
PS To the guest who enquired, until the start of this season maximum capacity of the club was 50, but thanks to the recent work undertaken at the Institute which has now given disabled access etc, the capacity is now maximum 70.