Up-market grocer Waitrose saw total sales grow by nine per cent in the third quarter of its financial year, ending October 30th.
Like-for-like sales increased by 4.4 per cent, with growth accelerating throughout October.
Both figures exclude petrol sales, and Finance Director of the company Tom Athron says results show Waitrose continues to outperform the overall market.
John Lewis Partnership results for the week suggest bonfire night helped boost sales at Waitrose, while sales of products traditionally associated with summer such as tomatoes, strawberries and ice cream were surprisingly high.
Meanwhile, trading levels in the week to November 6th were up 10.3 per cent on the same week in 2009.
Athron commented: “Waitrose had another very strong week’s sales, driven by bonfire night fare and our 25 per cent off wine and Champagne promotion.
“This promotion, which offers discounts on purchases of six bottles of wine or more, brought in some very large purchases by individual customers - one person at our Canary Wharf branch bought wines worth more than £8,000.
“We continue to build momentum in the run-up to Christmas with more transactions and our customers buying additional items.”
Kantar Worldpanel data published on Tuesday indicates that the supermarket has grown its market share by 0.2 per cent over the last year, with sales in the 12 weeks to the end of October up 8.6 per cent year-on-year.