Hack on IT systems since Easter weekend has forced M&S to halt online orders and left it struggling to stack shelves
Marks & Spencer has said it will take an estimated £300m hit to profits this year from a damaging cyber-attack that it expects will disrupt its online business into July.
The number was revealed as M&S said pre-tax profits rose by a better-than-expected 22% to £876m in the year to 30 March, shortly before the attack, as sales rose 6% to £13.9bn.