CMA proposes Aldi and Lidl face supermarket land-agreement rules
On 7 August 2026 the Competition and Markets Authority provisionally decided that Aldi, Lidl GB and Lidl NI should be covered by supermarket land-agreement rules designed to stop large grocery retailers making it harder for rivals to open nearby. The case turns an abstract idea — barriers to entry — into a concrete competition-policy example.
Chain
Restrictive land agreements can block nearby rival entry → barriers to entry rise → local markets become less contestable → incumbents face weaker competitive pressure → prices, choice or innovation may be worse for consumers → competition rules can lower the artificial entry barrier
Evaluation
Removing restrictive covenants can improve contestability, but it does not guarantee new entry. Suitable sites, planning constraints, scale economies, brand loyalty and local demand can remain significant barriers. The CMA decision is also provisional, so students should distinguish the proposed intervention from a final legal outcome.
Diagram
Stylised monopoly diagram using AR, MR and MC to compare weaker competitive pressure with a more contestable market; do not claim Aldi or Lidl is a monopoly