Retailers including John Lewis and Currys head for record online sales as frenzied shopping swamps websites.
Crude oil prices hit a four-year low after the decision of the Opec oil producers' cartel not to cut output.
Black Friday is less intense this year in the US after many stores opened earlier on Thursday.
The UK housing market is continuing to slow, Nationwide says, with annual house price inflation falling to 8.5% in November.
The eurozone inflation rate falls to 0.3%, suggesting that deflation remains a threat for the 18-nation bloc.
The BBC has learned one of the Tesco executives suspended by the company over the £260m profit misstatement has left the company.
Shares in energy stocks fall further as investors continue to react to the sharp fall in oil prices following Thursday's Opec meeting.
India's economy grew by 5.3% in the July-to-September period from a year earlier, down from a rate of 5.7% in the previous quarter.
A report from the UK parliament says Facebook, Twitter and other social networking firms need to make their terms and conditions clearer.
Regulator Ofgem imposes record £28m penalty on power generator Drax, while InterGen faces an £11m payout, for missing energy saving obligations
Japan's Nikkei closes at its highest level for two weeks, with exporters boosted by a weaker yen and airline shares helped by falling oil prices.
More than 70% of fresh chickens being sold in the UK are contaminated with the Campylobacter bug, the Food Standards Agency (FSA) reveals.
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