Having been in, in the wee small hours. It seems the main priority is stocking shelves. The till area that was self scan had no member of staff nearby, to turn the till on and only when I asked is it free tonight then did the till get switched on, as till person was employed stacking as well. Realistically huge amounts of money are not made its other night workers buying snacks, so a useful service is provided. But also it doesn't look like TESCO are paying unwarranted wages. But then I am not a share holder in a money grabbing corporation.