The equation about dietary and general health includes influences of Big Food, distribution and availability of food and food choices made by the population.
With dedicated, researched-backed and elimination of vested interest lobbying, the UK Government (in concert with European counterparts) could take on Big Food. Progressive and unfettered lowering of sugar levels in food, soft drinks, and NOT increasing artificially sweetened foods instead, etc are possible in addition to the work that Governments have done to add iodine, folate etc to foods, (if they have the power to do that they have no excuse to not do more for the population's health).
It might sound like the UK Govt (and others) becoming more of a nanny state, but is that not what Big Food is doing. at present?
Should Big Food be putting sugar on the dummies we suck so that we clamour for more or do we wish our representatives to tell them to bug off with their propaganda, and make/market/provide/serve far healthier food ? Big Food is lazy and all for convenient profit.
Local community groups boycotting local food supplies who distribute the sugary, unhealthy stuff are another potential force.