Yeah - it al seems to hinge on booking rebates on promotions and rigging the returns system to artifiiall create income before the real sale. Best case it might mean the missing £250 million will eventually materialise. Or not... Like I said earlier, lots of sales people rig returns to hit their targets - Tesco seem to have perhaps lost control of this, or been wilfully dishonest - again time will tell. Missing £250 mill is nothing compared to their pension problems, debts combined with borrowing rates on bonds, and the fickle nature of public buying habits.
A lot of criticism of them seems odd though - for example the move by the public away from out of town megastores to smaller shops. Tesco have that covered better round here at least than the other supermarkets - almost all the old Spars / rural post-office type places are now Tesco.