this is a penguin bar https://www.tesco.com/groceries/en-GB/products/322532892/?icid=ghsandapp_ghs_pdp_share
Club bars were an acceptable substitute
https://www.tesco.com/groceries/en-GB/products/311254840/?icid=ghsandapp_ghs_pdp_share
Of course my Mum was a hippie who didn't believe in sugar, additives or flavour so I could only look at the kids with chocolate bars in envy while I gnawed on my dried apricots