A Milkshake Tax: When Good Intentions Curdle Into Bad Policy
When Chancellor Rachel Reeves announces her much-leaked “milkshake tax” next week, she will frame it as a brave public health intervention. The reality is rather different: this is fiscal scraping at the bottom of the milk churn, dressed in wellness language whilst misunderstanding both nutrition and regulatory policy.
The proposed Soft Drinks Industry Levy extension to pre-packaged milkshakes punishes compliant businesses, ignores scientific nuance, raises negligible revenue, and risks pushing consumers towards less nutritious alternatives. All to generate perhaps £100 million towards a £20 billion shortfall. That equates to 0.5% of the gap, which reeks of desperation.
The Fatal Flaw: Milk Is Not Coca-Cola
The fundamental problem: lactose is not added sugar. When Government proposed 4.8g lactose per 100ml as “baseline allowance,” it revealed the exercise’s absurdity. They’re taxing naturally occurring sugar providing genuine nutritional benefits—calcium, protein, vitamin D, iodine.
Shaken Udder CEO Rob Reames warns: “the government is overlooking the nutritional benefits that milk naturally provides.” The irony is sharp: ministers risk perverse incentives pushing consumers from milk-based products towards nutritionally void alternatives laden with artificial sweeteners.
The consultation document’s language betrays policy confusion. Officials acknowledge “there is no doubt about the nutritional benefits of plain milk,” yet believe flavouring transforms it into a health menace comparable to fizzy drinks. Category confusion masquerading as policy.
Reformulation: Worse Than the Disease
Treasury hopes manufacturers will reformulate. But this means either reducing milk content (diluting nutrition to avoid taxation) or replacing sugar with artificial sweeteners. Many producers refuse on taste grounds. Those reformulating risk training children’s palates towards intensely sweet, artificially flavoured products rather than moderate sweetness from natural sources.
The SDIL reformulation success story is constantly cited. What goes unmentioned: replacing sugar with aspartame in Coca-Cola differs fundamentally from reformulating milkshakes. One product is nutritionally empty regardless; the other provides genuine benefits that reformulation compromises.
Penalising SMEs
Reames warns of “outsized impact on SMEs”—a structural reality of regulation at different scales. Large manufacturers have regulatory teams, laboratories, and economies of scale. Artisan producers and regional cooperatives face binary choice: absorb unviable costs or reformulate products customers chose because they weren’t industrially processed.
Government insists it is pro-growth and supportive of small business. Yet here it proposes a measure disproportionately burdening local food producers providing employment, value-added products, and diversity in the food system.
Assuming £100 million materialises, this represents approximately 17 hours of NHS spending—a rounding error in a £20 billion shortfall. Yet Government will upend an entire category, create compliance costs, and potentially harm public health.
Obesity continued climbing throughout the original tax. The British Soft Drinks Association notes seven in ten soft drinks are already low or no sugar. Industry responded by doing exactly what Government wanted—and obesity rose regardless.
This suggests the problem is considerably more complex than taxation levers on individual categories can address. Obesity is multifactorial, involving physical activity, dietary patterns, food environment, and socioeconomic factors. Pretending a milkshake tax represents serious response is health theatre, not policy.
The industry’s calculation: the levy reduces intake by half a grape per person daily. This quantified impact generates headlines and compliance costs with laughable cost-benefit analysis.
Moving the Goalposts
Shadow Chancellor Mel Stride’s criticism cuts to regulatory fairness’s heart: “businesses that played by the rules punished—all to save Rachel Reeves’s skin.” When SDIL was introduced in 2018, milk-based drinks were explicitly exempted. Companies made long-term investments based on that framework.
Now, with no evidence the health rationale materially changed, Government proposes retrospectively penalising products designed in good faith compliance—a fundamental regulatory compact violation. Ministers shifting goalposts when fiscally convenient shouldn’t wonder why businesses factor sovereign risk into UK investment decisions. Stability and predictability matter.
This occurs against a cost-of-living crisis squeezing household budgets. Industry estimates supermarket prices could rise 5%. For families struggling with inflation, energy costs, and frozen thresholds, another marginal increase.
The distributional impact is predictably regressive. Wealthier consumers absorb costs or switch to premium alternatives. Lower-income families pay more or switch to cheaper, less nutritious options. Progressive taxation this is not.
If genuinely serious about childhood obesity, Government should focus on demonstrated effectiveness: school sports facilities, planning policy preventing obesogenic environments, nutrition education, and support for home meal preparation. These interventions are more difficult, expensive, and less telegenic. They also work.
If proceeding regardless, at a minimum ensure only added sugars are taxed, not naturally occurring lactose. Grandfather existing products for substantial transition periods. Commission genuinely independent research, not Treasury models justifying pre-determined conclusions. That ministers ignore this suggests revenue matters more than health.
The much publicised “Milkshake Tax” encapsulates a governance style mistaking activity for achievement, prioritising short-term fiscal convenience over policy coherence, concerned with “doing something” optics rather than effectiveness.
Ministers will speak earnestly about childhood obesity, public health, and difficult choices. But the gap between rhetoric and reality is vast. These are easy, ineffective choices creating action illusion whilst achieving negligible health benefits and generating modest revenue at disproportionate cost to business and consumers.
Rachel Reeves has a £20 billion problem, but a milkshake tax isn’t the solution, it’s a distraction from genuine fiscal consolidation and meaningful health policy. Penalising milk-based products whilst ignoring nutritional distinctions between added and natural sugars risks worsening public health outcomes.
When good intentions curdle into bad policy, the sensible response is to pause, reconsider, and develop interventions that work. The milkshake tax fails this test comprehensively.
