Data this week showed that the decisive Conservative Party win in last month's general election had not unleashed pent-up demand from shoppers during the holiday season as many retailers had hoped following a year of political instability and uncertainty over Brexit.
That followed relatively subdued updates from the high street following "Black Friday" sales at the end of November.
Tesco and Marks & Spencer are scheduled to post their trading statements on Thursday followed by JD Sports on Friday.
Following are some of the highlights:
SAINSBURY'S
Britain's No. 2 supermarket group reported a slight drop in underlying sales on Jan. 8 as weak demand for general merchandise overshadowed solid sales of food.
Like-for-like sales, excluding fuel, fell 0.7% in the 15 weeks to Jan. 4.
MORRISONS
The country's fourth-largest supermarket group reported another fall in underlying sales over Christmas on Jan. 7 as a tough economic backdrop and sustained consumer uncertainty deterred shoppers from splashing out.
ALDI [ALDIEI.UL]
The British arm of the German discount supermarket said on Jan. 6 total sales rose 7.9% year-on-year in the four weeks to Dec. 24, driven by strong demand for beer, wine and spirits and its range of premium products.
The British clothing retailer raised its full-year profit forecast on Jan. 3 after a better-than-expected Christmas performance.
(Reporting by Tanishaa Nadkar in Bengaluru; editing by Josephine Mason and Nick Macfie)