TESCO is indulging in “obscene profiteering” during the worst cost-of-living crisis in decades, Unite the Union charged today after the supermarket giant reported a whopping £1 billion profit despite soaring food prices.

The mega-rich firm said it made the pre-tax windfall in the 12 months to the end of February as total sales rose by more than 7 per cent to £65.8bn.

The profit was less than half of the more than £2bn it pocketed a year earlier as the amount of product sold fell, but bosses admitted making up for the shortfall by charging more per item on average.