Here's the Asda no added sugar juice which is listed
Pomegranate & Cranberry Juice Drink, No Added Sugar, chilled, 250ml 1½ javascript:__doPostBack('ctl00$ctl0...1$GridView_Products$ctl03$LBADDExtraEasy','')1½ javascript:__doPostBack('ctl00$ctl0...h1$GridView_Products$ctl03$LBADDOriginal','')1½
I can't see a Tesco cranberry juice listed, light choices or otherwise.
There's this for Ocean Spray
Light Cranberry Classic Juice Drink, 250ml 1 javascript:__doPostBack('ctl00$ctl0...1$GridView_Products$ctl08$LBADDExtraEasy','')1 javascript:__doPostBack('ctl00$ctl0...h1$GridView_Products$ctl08$LBADDOriginal','')1
Light Cranberry Juice Drink Cordial, diluted as directed , 250ml 1½ javascript:__doPostBack('ctl00$ctl0...1$GridView_Products$ctl02$LBADDExtraEasy','')1½ javascript:__doPostBack('ctl00$ctl0...h1$GridView_Products$ctl02$LBADDOriginal','')1½
even the light cordial is synned!