The latest stories from the Business section of the BBC News web site.
A trade body for energy firms says the regulator should ensure rules are followed, but Ofgem hits back.
The struggling High Street stationery retailer has failed to find a buyer, putting 820 jobs at risk.
As well as job changes, Tesco says it will close its counters and hot delis at its supermarkets.
Sales of value lines have grown 47% in the last year as food prices soar, research suggests.
Washington has been tightening its rules on exports of US technology to China for several years.
Even sanctions-hit Russia is expected to grow this year, but the IMF says the UK is "on the right track".
Projects aimed at lowering carbon emissions are boosting growth in poorer parts of the country.
Two start-up firms are making wearable technology that targets menstrual discomfort.
It is three years since the UK left the EU and time to start looking at the evidence.
The Fire Brigades Union says it will not announce dates for 10 days so employers can table an improved offer.
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