DSG International ended a tough week on a positive note but the same could not be said for London’s stock market with the FTSE 100 closing on Friday at a fresh 5½-year low.

DSG, the parent company of PC World and Currys, saw its share price drop by a third on Wednesday amid talk of poor trading and concerns that suppliers were struggling to obtain credit insurance. DSG’s joint house broker, Citigroup, also lowered its earnings forecasts for the retailer.