In December, the pressure group Farm called on Tesco to use its "market power to ensure dairy farmers receive a fair share of the retail price".

BBC: NEWS | Business | Is Tesco too big?

But in July, the Competition Commission published a critical report on Milk Marque, the biggest farm co-operative selling group in Britain, which sells 40% of milk produced by dairy farmers.

ECONOMIST: Farming

Aside from convenience stores and some niche sellers, the territory's supermarket business is controlled by two huge chains: Park'n Shop, the stores owned by Li Ka-shing's Hutchison Whampoa Group, and Wellcome, which belongs to Asia's biggest grocer, Jardine Matheson-controlled Dairy Farm.

CNN: Groceries to go