Spotted in local Home Bargains (Wigan, Saddle Junction) but likely National as with all Home Bargains deals.
Short dated as BBE is June 2017.
I saw the following varieties - Apple, Lemon, Orange.
1Kg gives 20 servings at stated 400 - 500 ml water per scoop.
Review Here (First one I found...lazy me...maybe I need an energy drink)Clicky
At under a quid worth a try out just to see if its worth the cost at 'normal' prices if this is what you are interested in.
EDIT: Added section from the review.