Black Friday as it has become known sees retailers dramatically slash prices in a bid to launch the Christmas shopping season.
The recent phenomenon of Black Friday has in the past seen shoppers queue for hours outside major stores, and then fight over the best deals.
Last year there were numerous disturbances in stores around the country, as some shoppers got out of hand and violence flared, with the police being called to restore order in some cases.
And Black Friday is big business for retailers.
A whopping £810 million was spent around the country on Black Friday last year, and analysts expect the £1 billion barrier to be smashed this year.
Although a relatively recent event in the UK, the term Black Friday dates back more than 50 years in America.
The sales frenzy traditionally takes place the day after Thanksgiving, and this year Black Friday falls on November 27.