... about 9,500 transactions per week on average (I happen to have found this out today), by 0.8 (since not every transaction involves taking money), by �14 (a sensible amount on average) gives roughly �100,000 per week.
when did you last withdraw �14? The record withdrawal was apparently over �2 million in one christmas weekend at a cash machine "darn sarf", but they don't hold anywhere near that amount at a time for obvious ramraiding reasons, instead they are refilled on a regular basis. Certainly they wouldn't last all week without being refilled, lisaj. Sorry i can't give you a figure scubaboy, and i doubt you will get one for security reasons.....
When I worked in the bank it all depended on the location of the cash machine and the day of the week...ie. Oxford Street banks would hold more cash than a sub branch in a quiet location, and more would be put in on a Friday than on a Monday