By Popular Request: Gin Sandwich recipes

A while ago on Twitter, in one of those conversations that sometimes happens when I ought to be practising or tidying or some such thing, there was discussion of gin, and taking gin on trains, and so on. In the way of such things it got rather whimsical and somehow, I'm not sure how, ideas for gin sandwiches came up.I'm pleased to say I have now tried two of the ideas, and they worked...