If they were to do away with 'thick' sliced bread, what's to stop you buying unsliced and cutting it as thick as you want?!
I buy the thick sliced stuff because I only go through about 8 slices in a week, and after that its gone mouldy. So with a regular loaf of 13 slices almost half goes to waste. Aren't the government also always rabbiting on about us making too much waste, so which would they rather I do?