Sophie Lund-Yates, an analyst at Hargreaves Lansdown, said: "Online sales are lower margin, which compounds an existing problem because operating margins are already a little thin. The other thing to consider is spending patterns in the coming months. Customers may have splurged on their at-home set ups, but as the economic outlook gets gloomier by the day, it’s fair to assume that discretionary spending is going to be pinched. That will hurt Dixons’ top line, and one way to help mitigate that is through discounting prices – but that would compound the existing margin problem.