Analysts are predicting underlying pre-tax profits for Sainsbury’s to be about £578m in its full-year results tomorrow, down from £587m last year. City observers are concerned that the company is leaning too heavily on its recent acquisition of Home Retail, which includes Argos and Habitat. Argos delivered growth of 4.3 per cent in the fourth quarter, like-for-like food sales in the same period fell 0.5 per cent.