In the last 2 weeks we have shopped at Sainsbury's & twice it has been a bad experience, last week we reverted to the self checkout as their were large queues at all the checkouts. This week at a different Sainsbury's we again reverted to self checkout due to large queues again at the checkouts, on both occasions there were queues at the self checkout too. I have now realised what is causing all the queues, Sainsbury's are not employing sufficient staff to man the the checkouts creating major problems in everybody having to queue, this is creating a bad shopping experience & instead of a manager over seeing the issues & perhaps if there were enough staff they could have the checkouts manned to suit the demand. Last week a number of customers put their shopping baskets down & left the store.