Of the 100 fastest-growing companies in the world, Tesco Direct has the best website (www.tescodirect.com). At least, that's the conclusion of a survey by the London School of Economics, which liked its customer service, ease of use and product range. So far, the service is predominantly geared to London and the south-west, but the whole country should be covered by the year's end.

Sainsbury's service (www.sainsburys.co.uk) is also limited, servicing those inside the M25 only.

Asda may be leading the way on discount prices, but is lagging behind when it comes to online shopping. You can't order atwww.asda.co.uk, but there is a home delivery service available that uses a CD-rom. Call 0845 300 7777 for details.

Iceland's online shopping service (www.iceland.co.uk) is the most extensive, reaching 97% of the country. There is a minimum order of £40 but the delivery is free.

Last week Waitrose extended its e-business, offering organics and flowers at www.waitrose.com. Fruit and vegetables can be ordered online Tuesdays to Fridays, and delivered anywhere in mainland UK in 48 hours.

Somerfield (www.somerfield.co.uk.) plans to launch its e-business next month.