Sainsbury's–Asda merger blocked (2019)
The CMA blocked the proposed merger of two of Britain's largest supermarket chains after a phase 2 investigation. It found the deal would reduce competition in groceries and at the checkout, and that remedies short of blocking would not work.
Sainsbury's and Asda abandoned the deal.
The case became the benchmark for how the CMA treats large grocery combinations and how a phase 2 reference can end a transaction outright.
It shows what happens when a UK merger review moves past phase 1 and the parties cannot agree remedies.
