being a veteran i have a huge list of diet drinks 🙂
sainsburys do
fruit crush (diet) pinapple and grapefruit...tastes like lilt
fruit crush (diet) orange twist...that one is gorgeous!!!
cloudy lemonade (diet)
dandilion and burdock (diet)
ginger beer (diet)
dr peper zero
also for kids..diet..cherryaid/orangeaid/lime aid
tescos also have some good ones , much the same but thier value stuff is also diet unlike sainsburys
plus loads of flavoured waters and spakling flavoured waters...beware of the saisburys ones though...they have natural fruit sugar in and you will need to bolus for those ones
i personally like all the above plus i make my own mixture of diet vimto and diet lemonade ... thats yummy 🙂