Gamma 'Improvit'

A year or two back I bought some Gamma Improvit frozen granulated food which obviously has to be kept in a freezer. I have just found an almost empty tub in my freezer of improvit cichlid diet. It's clearly well past it's use by date but my siamese fighters love it and I was wondering if anyone knows if it is still available today?

I can find only one shop in the UK with it on its website here  but the website may not have been updated for years. I suppose you could always contact them to ask, the site does say they deliver.