John Lewis enjoyed record sales for a week in November last week, seeing sales exceed £100m for the week to November 24.
Overall sales were up 11% on last year and 19.6% on the same week the previous year to £109.6m.
The retailer did not split out any specific areas of good performance.
Online performed well, with internet sales in all areas up 34.6% on the previous year.
John Lewis saw the effects of Black Friday - traditionally the first day of Christmas shopping - with online sales achieving a record-breaking £9m orders and the website taking £105 per second.
“We are extremely pleased to have achieved such a strong uplift in sales,” said head of selling operations Maggie Porteous.
“There is no doubt that Christmas sales are really beginning to take off and customers are appreciating that John Lewis is the destination of choice for preparing the home and finding innovative products as well as inspiring gift ideas.”
“Our commitment to being Never Knowingly Undersold means that we continue to match competitors’ prices, including during their promotional activity, ensuring that customers can be certain that they will be offered the best value and service at John Lewis.”