Supermarket giants Sainsburys and Tesco have been criticised by consumer watchdogs for using too many plastic bags for online shopping orders.
Which? magazine (July 2009 edition) asked volunteers to try online shopping and got its researchers to order the same 29 items from all five online supermarkets: Asda.com, Ocado.com, Sainsburys.co.uk, Tesco.com and Waitrosedeliver.com.
Tesco and Sainsburys delivered the shopping in 14 bags each twice the number that Waitrose used.
The Which? report stated: The pack of pork sausages and a packet of mince arrived in their own bags from Tesco, which also delivered a bottle of Fairy Liquid in one bag. Meanwhile, Sainsburys told us that it was investigating this case. It said that drivers are trained to use minimal numbers of bags and to take back bags for reuse or recycling.
Tesco said that it gives its customers the option to have online shopping delivered in crates that are then taken away, and its drivers are able to take away used bags for recycling.
Tesco also claimed that regular testing showed it was the supermarket that uses the least number of carrier bags in deliveries.