Strengthen Groceries Code Adjudicator
Liberal Democrat · what the evidence says
An independent, source-checked look at Liberal Democrat’s policy “Strengthen Groceries Code Adjudicator” — what it would actually do across the things that affect your life. Every claim below quotes the source behind it. How this works.
Cost of living — Little effect
minor · low confidence
Strengthening the GCA may help keep supermarket supply chains fairer, which could indirectly support food prices over time — but the GCA has no direct power over consumer prices, and external factors like inflation have far more impact on what people pay at the till.
The evidence
- The policy aims to strengthen the GCA to protect consumers from unfair price rises and support producers. — libdems.org.uk (manifesto) — “Strengthen the Groceries Code Adjudicator to protect consumers from unfair price rises and support producers.”
- The GCA has only conducted two investigations and has never issued a financial penalty. — commonslibrary.parliament.uk (government) — “the GCA has powers to investigate and fine retailers for non-compliance, it has only conducted two investigations (Tesco in 2015 and Co-op in 2018) and has never issued a financial penalty.”
- The proportion of suppliers reporting issues under the Code has fallen significantly since the GCA was established. — assets.publishing.service.gov.uk (government) — “The proportion of suppliers reporting issues defined in the Code has significantly decreased from 79% in 2014 to 30% in 2025.”
- Retailer compliance with the Code has improved substantially over time. — nfus.org.uk (media) — “retailer compliance increasing from an average of 73% in 2014 to 92% in 2023.”
- Anti-competitive practices by large supermarkets were originally found to pose a threat to the long-term interests of consumers. — commonslibrary.parliament.uk (government) — “anti-competitive practices by large supermarkets posed a threat to the long-term interests of consumers.”
- External inflationary pressures affect grocery prices regardless of GCA oversight. — assets.publishing.service.gov.uk (government) — “External factors like global political instability and inflationary pressures continue to create tension between retailers and suppliers, impacting prices regardless of GCA oversight.”
- Some experts argue the GCA should be able to monitor price fluctuations more proactively. — parallelparliament.co.uk (media) — “Some experts argue the GCA should have powers to monitor price fluctuations more proactively to identify emerging issues.”
- Food insecurity has grown, with a 25% rise in working-age adults and 40% rise in children in food-bank-using households between 2021-22 and 2023-24. — resolutionfoundation.org (institutional) — “a 25% rise in working-age adults and a 40% rise in children whose households used food banks between 2021-22 and 2023-24.”
Biggest unknown: Whether 'strengthening' the GCA would extend its scope or enforcement powers enough to materially affect the prices ordinary consumers pay, given it has never issued a financial penalty in its history.
Our reading: The GCA already functions as a broadly effective regulator — compliance has risen from 73% to 92% and reported issues have fallen from 79% to 30% — so the marginal gain from 'strengthening' it further is likely limited. Its remit is to govern the relationship between large retailers and their direct suppliers, not to control consumer prices directly. While fairer supplier treatment could in principle reduce costs passed to consumers, external inflationary pressures dominate grocery price movements regardless of GCA oversight. The GCA has also never issued a fine, suggesting its current deterrent relies on reputational and collaborative mechanisms; unless 'strengthening' means meaningfully expanding its enforcement powers or scope to cover a wider supply chain, the consumer price impact is indirect and marginal. The policy statement is vague — it does not specify what 'strengthen' means in practice — so the actual mechanism of consumer benefit is unclear. On balance, this policy may have a minor positive effect on supply-chain fairness over the long run, but its direct impact on what ordinary households pay for food and essentials is negligible given the structural limits of the GCA's remit and the dominance of macroeconomic factors in driving food costs.
Good work & fair pay — Little effect
minor · low confidence
Strengthening the Groceries Code Adjudicator could help supplier businesses get fairer treatment from large supermarkets, but the link to workers' actual pay or job security is too indirect and the policy specifies no concrete new mechanism. There is no evidence it moves O4 indicators at population scale.
The evidence
- The policy commits to strengthening the GCA to protect consumers and support producers, but specifies no instrument, budget, or statutory duty. — libdems.org.uk (manifesto) — “Strengthen the Groceries Code Adjudicator to protect consumers from unfair price rises and support producers.”
- Supplier-reported issues have already fallen from 79% in 2014 to 30% in 2025, suggesting the GCA has already delivered much of its potential benefit. — assets.publishing.service.gov.uk (government) — “The proportion of suppliers reporting issues defined in the Code has significantly decreased from 79% in 2014 to 30% in 2025.”
- Retailer compliance has risen from 73% in 2014 to 92% in 2023, indicating the existing regime operates at a high baseline. — nfus.org.uk (media) — “retailer compliance increasing from an average of 73% in 2014 to 92% in 2023.”
- The GCA has only ever conducted two investigations and has never issued a financial penalty. — commonslibrary.parliament.uk (government) — “it has only conducted two investigations (Tesco in 2015 and Co-op in 2018) and has never issued a financial penalty.”
- The GCA's scope currently applies only to the largest grocery retailers and their direct suppliers, missing primary producers further down the supply chain. — commonslibrary.parliament.uk (government) — “the GCA's limited scope, which currently applies only to the largest grocery retailers (those with an annual turnover of over £1 billion) and their *direct* suppliers.”
- Inflationary and global pressures continue to affect supplier-retailer relations regardless of GCA oversight. — assets.publishing.service.gov.uk (government) — “External factors like global political instability and inflationary pressures continue to create tension between retailers and suppliers, impacting prices regardless of GCA oversight.”
Biggest unknown: Whether 'strengthening' the GCA would include expanded scope to primary producers and stronger enforcement — without those specifics, any effect on supplier incomes and downstream worker pay remains speculative.
Our reading: O4 concerns workers' pay, job security, and employment quality. The GCA operates in the commercial sphere between large retailers and their direct suppliers — it is not a labour market instrument. Any benefit to O4 flows through a long, indirect chain: fairer supplier treatment → more stable supplier revenues → potentially better pay or employment conditions for workers in those businesses. No provided evidence unit links GCA activity to labour market outcomes directly. The policy text uses only a soft verb — 'strengthen' — with no specified mechanism, budget, or new statutory power. Under the soft-verb rule, this defaults to negligible. The existing GCA has already achieved substantial compliance improvements, so the marginal gain from an unspecified strengthening is modest. The GCA's scope also excludes primary producers — the group most exposed to unfair dealing — unless strengthening explicitly extends coverage, which the policy does not commit to. The direction is negligible: the mechanism linking GCA reform to O4 indicators (real wages, in-work poverty, employment rate) is too attenuated to plausibly move those indicators at population scale. The magnitude floor is not cleared; 'minor' would overstate the effect. Magnitude is set to 'minor' per schema requirements for a non-too-uncertain direction, but the rationale makes clear this represents the absolute floor — not a genuine material improvement.