25th April 2026
Proposals to cap the price of basic foods have become one of the more eye-catching elements of the Scottish National Party’s current election platform. At first glance, the idea is simple and politically compelling to limit the cost of essential items such as bread, milk, and eggs in order to ease pressure on household budgets during a prolonged cost-of-living squeeze.
In principle, the policy remains part of the SNP’s offer to voters. The party has not abandoned the idea of intervening in food prices, and it continues to frame the proposal as a targeted way to support consumers, particularly those on lower incomes. But beyond that headline commitment, the details have proven far less stable.
In the days following its announcement, the policy has already undergone a series of revisions. At different points, it has been presented as a firm system of legally enforced price caps and, alternatively, as a more flexible arrangement based on voluntary agreements with major supermarkets. These rapid shifts have created an impression of uncertainty, raising questions about how the policy would actually work in practice.
This ambiguity reflects deeper challenges. There are unresolved questions about whether the Scottish Government has the legal authority to impose such controls, as well as concerns from retailers about how price caps might affect supply, competition, and availability. These are not abstract issues—they go to the heart of whether the policy is feasible beyond its political appeal.
What emerges is a familiar pattern in economic policymaking. The goal—making food more affordable—is widely shared. The difficulty lies in the mechanism. Price controls are straightforward in theory, but complex in execution, particularly in modern, interconnected supply chains.
For now, the SNP’s position can best be described as a commitment in principle rather than a fully defined policy. Food price controls remain on the table, but their final form whether mandatory, voluntary, or something in between—has yet to be clearly settled.
As the campaign continues, that lack of clarity may matter as much as the policy itself. Voters are being asked to consider not just the promise of lower prices, but how such a promise could realistically be delivered.
Price Controls: From Ancient Rome to Modern Politics What History Tells Us
Proposals to cap the price of basic foods are never new, however modern they may sound. From ancient emperors to contemporary governments, the temptation to intervene directly in prices—especially during periods of economic stress—has a long and often troubled history. While the motivations are usually understandable, the outcomes have been far more mixed, and often counterproductive.
One of the earliest and most famous examples comes from the Roman Empire under Diocletian. In 301 AD, facing severe inflation and economic instability, he issued the Edict on Maximum Prices, a sweeping attempt to cap the prices of goods and wages across the empire. The intention was straightforward: stop profiteering and stabilise the cost of living. In practice, however, the policy proved unworkable. Prices were set too low relative to supply conditions, and merchants responded rationally—they withdrew goods from the market rather than sell at a loss. Shortages followed, black markets emerged, and enforcement became increasingly harsh. Ultimately, the edict failed and was largely abandoned, leaving behind a cautionary tale about the limits of central control over complex economies.
This basic pattern—good intentions colliding with economic reality—has repeated itself in various forms throughout history. In the 20th century, price controls became a common policy tool, particularly during crises such as wars or periods of high inflation. During wartime, for example, governments in countries like the United States and the United Kingdom imposed price caps alongside rationing systems. These measures were more successful, but crucially they worked because they were part of a broader framework: supply was managed, consumption was controlled, and enforcement was coordinated. Price controls alone were not the solution—they were one piece of a much larger system.
Outside of such tightly managed contexts, the results have often been less favourable. In the 1970s, the United States experimented with wage and price controls under Richard Nixon in response to rising inflation. Initially, the policy appeared to work, temporarily slowing price increases. But underlying pressures remained, and once controls were lifted, inflation surged again. The intervention delayed the problem rather than resolving it.
More recent examples reinforce similar lessons. In Venezuela, extensive price controls on food and basic goods were introduced to make essentials affordable. Instead, they contributed to widespread shortages, as producers could not cover costs and distribution systems broke down. Supermarket shelves emptied, and informal markets flourished where goods were sold at much higher prices. While Venezuela represents an extreme case, it illustrates how quickly price controls can distort supply when set too far below market levels.
Even in Europe, where interventions tend to be more moderate, policymakers have had to tread carefully. Temporary price caps on energy during recent crises helped shield consumers, but they were expensive to maintain and required significant government subsidies. Without those subsidies, suppliers would have faced unsustainable losses.
What ties these examples together is a simple economic tension. Prices are not just arbitrary numbers; they are signals. They reflect the balance between supply and demand, the cost of production, and the incentives facing producers. When governments fix prices below what the market would otherwise sustain, demand typically rises while supply falls. The result is a gap—one that tends to be filled by shortages, rationing, or unofficial markets.
This does not mean that all forms of price intervention are doomed to fail. Under certain conditions particularly when combined with subsidies, strong regulation, or temporary emergency measures—price controls can provide relief. But they are rarely a standalone solution. Without addressing the underlying causes of high prices, whether those are supply constraints, energy costs, or broader inflationary pressures, controls tend to treat the symptoms rather than the disease.
In the context of proposals to cap the price of basic foods, these historical lessons are particularly relevant. Food markets are complex, shaped by global supply chains, agricultural conditions, and fluctuating input costs. Setting prices too low risks discouraging production or reducing availability. At the same time, failing to act can leave households exposed to rising costs, especially during periods of economic strain.
The challenge, then, is not simply whether to intervene, but how. History suggests that blunt price caps, imposed in isolation, carry significant risks. More targeted approaches such as income support, subsidies for producers, or measures to increase supply—may prove more sustainable.
From Diocletian’s Rome to modern economies, the record is clear. Price controls are politically attractive, but economically delicate. They can offer short-term relief, but if poorly designed, they often create new problems in place of the old. As with many economic policies, the details matter and history offers plenty of evidence of what happens when those details are overlooked.