The norm for drawing out large sums of cash is usually to forewarn the bank and they will usually have the funds ready next day or soon as. The questions regarding the reason for withdrawing these sums is usually for the benefit of the customer, as many have been conned into doing so by criminals and the likes... Better to ask and answer a few questions then to lose a few grand. If people are conned we tend to blame the banks for not being thorough enough. A guy I know breaks commercial vehicles and sells them as well. A client came in looked at a lorry he had for sale, took it for a drive and negotiated a price, The price was £15K. He landed next day asked the owner to run him down to the bank, which he duly did, waited outside and 15 mins later the guy appeared with a bag of money, they went back to the premises' the guy handed over the money and it was counted... Then drove off in the lorry. The seller then went to his bank and lodged the money... only to be called next day by the Bank to be told that the money was all Fake. Bank cctv was checked and the buyer had never even been in the bank. To date the lorry has never been found.