John Lewis is to more than double the number of lines it sells on the Internet when its website is relaunched on Monday. The upgrade indicates that the retailer, which was initially cautious about e-commerce, now sees the sales channel as an integral part of its future strategy. The offer - under the John Lewis Now umbrella - is part of Johnlewis.com. The John Lewis test site, launched in July, carried 500 lines whereas the new site will feature approximately 1,000 lines. It will be the precursor to a fuller offer, with 2,500 lines, to be launched next Autumn.John Lewis e-commerce manager Martin Smith said the launch will be backed by in-store and direct marketing. He stressed that the in-store promise, 'Never knowingly undersold', will not be replicated on the Internet. "We are building our understanding of how the John Lewis brand works in an online environment. Customers have said that they want to see John Lewis represented online and we are responding to that. It is a good opportunity for us, but we realise that our strength is in our stores," he said.