Aldi and Lidl face pressure from rival UK supermarkets to be reclassified under competition rules that prevent large retailers from blocking competitors via land restrictions.

Sainsbury's, Morrisons and Iceland have urged the Competition and Markets Authority to reclassify Aldi and Lidl as 'large grocery retailers' under the Controlled Land Order, arguing their combined market share has grown from less than 3% to about 20%, with the CMA expected to make a preliminary decision in July 2026.