Ocado is launching a service that enables shoppers to review products online.

The Ratings & Reviews initiative goes live next month and will allow customers to score Ocado’s 21,000 groceries and non-food items on value, packaging and quality, as well as write reviews.

The retailer will also be encouraging shoppers to share the reviews through sites such as Facebook and Twitter.

“We’ll be able to listen to customers, and learn, in a way that the local supermarket cannot,” said head of retail John Rudoe.