Hong Kong's grocery shoppers are the most impulsive in the region - and have the lowest level of customer loyalty, according to a survey released yesterday. The study, by ACNielsen, found that 27 per cent of Hong Kong's population went grocery shopping without a list - the highest in the Asia-Pacific, followed by Singapore and Thailand with just 14 per cent. About 44 per cent of local consumers said they also used three or more stores regularly for grocery shopping, compared with an average of two in most of Southeast Asia, the survey revealed. 'People in Hong Kong have a low loyalty to shops and stores,' ACNielsen North Asia managing director Fung Shing-kwong said. The survey, conducted last year, polled 15,000 urban households in 15 markets, including Australia, Japan, Sri Lanka and China. 'As people often shop around, retailers and product manufacturers have to work more on retaining the customers in the shops,' he said. He said supermarkets often relied on promotions and the store's design to maximise the time consumers spent shopping. The study showed Hong Kong consumers rated convenience first when shopping.