Sainsbury's pulls Fresh Kitchen

Sainsbury's tried a format to more directly compete with Pret, but it didn't work out. Implication is that they had the wrong size (too big or small?). And I wonder if they found that the staff costs were too high for them, given that they would have still wanted to keep prices low.

Source: https://www.marketingweek.com/2012/03/19/sainsburys-pulls-fresh-kitchen-food-trial/