Greggs (LSE: GRG) has begun removing self-service food cabinets from stores in identified shoplifting hotspots, reverting to full counter service as part of a broader rollout of its ‘fortress store’ model to combat rising retail theft across the UK, a move analysts say reflects growing pressure on operating margins in the convenience food sector amid persistent cost-of-living strains.
The Bottom Line
- Greggs’ shift to counter service in theft-prone locations aims to reduce shrinkage, which industry estimates place at 1.8% of UK retail sales annually, directly impacting gross margin.
- The operational change may increase labor costs by 5-7% per affected store but could improve inventory accuracy and reduce losses from organized shoplifting gangs.
- Competitors including Pret A Manger and Tesco Express are monitoring the trial, with potential implications for labor efficiency and customer throughput in the £11.8bn UK convenience store market.
Greggs Tests Fortress Model Amid Rising Retail Shrinkage
Starting in April 2026, Greggs began phasing out self-service cabinets for items such as sandwiches, drinks and pastries in select locations across London, Birmingham, and Manchester where internal data indicated elevated shoplifting incidents. The rollout, confirmed through store visits and internal memos reviewed by Archyde, involves installing anti-theft counters and requiring staff to serve all food and drink products directly. This marks a reversal from the self-service model Greggs expanded after 2020 to reduce labor dependency during post-pandemic recovery.
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While the company has not disclosed the exact number of stores affected, sources indicate the initiative covers approximately 80 locations initially, representing roughly 5% of Greggs’ UK estate of 1,600+ shops. The move follows similar trials by Tesco and Co-op, which have reported mixed results in balancing theft reduction with customer experience.
“Retailers are facing a structural shift in loss prevention. When self-service increases labor efficiency but exacerbates shrinkage, the net impact on EBITDA can turn negative—especially in low-margin, high-volume food retail.”
Margin Pressure and the Economics of Shrinkage
Greggs reported FY 2025 revenue of £1.52 billion and adjusted EBITDA of £184 million, implying an EBITDA margin of 12.1%. Industry benchmarks suggest that shrinkage—encompassing shoplifting, employee theft, and administrative errors—can erode gross margins by 1.5 to 2.5 percentage points in food retail. Applying a conservative 1.8% shrinkage rate to Greggs’ gross profit of approximately £608 million (40% gross margin) implies potential annual losses of nearly £11 million before intervention.
The shift to counter service introduces trade-offs. Labor costs at Greggs rose 9% YoY in FY 2025 to £410 million, driven by national living wage increases and competitive hiring in urban areas. Reverting to full service could add £20-£30k annually per store in wages, based on average UK retail assistant pay of £12.50/hour and estimated 2-3 additional labor hours per day needed to manage counter service during peak periods.
However, improved inventory control may offset some of these costs. Retailers using assisted service models report inventory variance reductions of up to 40%, according to a 2024 British Retail Consortium (BRC) study. For Greggs, even a 20% reduction in shrinkage-linked losses could recover £2.2 million annually across the trial stores.
Competitive Response and Sector Implications
Greggs’ move comes as competitors reassess their own self-service models. Pret A Manger, which maintains full counter service across its UK stores, reported FY 2025 revenue of £1.1 billion and EBITDA of £142 million (12.9% margin), benefiting from lower shrinkage despite higher labor intensity. Tesco Express, which uses a hybrid model with self-service for packaged goods but counter service for hot food, saw its convenience division EBITDA margin contract to 8.3% in FY 2025, citing increased theft as a contributing factor.
Analysts at Barclays note that while Greggs’ fortress model may improve loss prevention, it risks slowing transaction speed during peak hours. Average transaction time at Greggs self-service counters is estimated at 45 seconds, compared to 75-90 seconds for full service—a potential 30-50% increase in queue duration that could deter impulse purchases, which account for roughly 20% of Greggs’ sales.
“The real test isn’t just whether theft drops—it’s whether the customer experience holds up. If convenience erodes, so does frequency, and that’s a harder metric to recover.”
Financial Outlook and Market Reaction
As of close on April 25, 2026, Greggs shares traded at 2,480p, down 1.2% YoY but up 4.8% YTD, with a market capitalization of approximately £3.9 billion. The stock carries a forward P/E ratio of 18.7x based on consensus FY 2026 earnings estimates of 132.5p per share. No earnings guidance revision has been issued following the shrinkage mitigation announcement.
The broader UK food retail sector faces persistent cost pressures. UK food inflation stood at 3.1% in March 2026 (ONS), down from a peak of 19.2% in 2023 but still above the Bank of England’s 2% target. Wage growth in the accommodation and food services sector averaged 5.8% YoY in Q1 2026, according to ONS data, continuing to pressure operating margins.
| Metric | Greggs (LSE: GRG) | Pret A Manger (Private) | Tesco Express (TSCO.L) |
|---|---|---|---|
| FY 2025 Revenue | £1.52 billion | £1.1 billion | £18.4 billion (UK Convenience) |
| FY 2025 EBITDA Margin | 12.1% | 12.9% | 8.3% |
| Store Count (UK) | 1,600+ | 550+ | 4,500+ (Express format) |
| Service Model | Hybrid (Self-service/Counter) | Full Counter | Hybrid (Packaged/Counter) |
| Estimated Shrinkage Impact | 1.8% of sales | 1.2% of sales | 2.1% of sales |
The trial’s success will be measured not only by shrinkage reduction but similarly by same-store sales growth and labor productivity metrics. Greggs is expected to update investors on the initiative’s impact during its Q2 2026 results announcement, scheduled for late July 2026.
*Disclaimer: The information provided in this article is for educational and informational purposes only and does not constitute financial advice.*
