Uk depositing cash / entered wrong amount?

So i had a cheque for £50 and £150 cash on its own so i done the cheque online. i went up to an atm for the £150 in cash and i stupidly thought i had £200 in cash. What i done in my head was add the cheque to the cash. so when the atm said how much cash did i deposit i said £200 not £150. what is gonna happen now?... show more So i had a cheque for £50 and £150 cash on its own so i done the cheque online. i went up to an atm for the £150 in cash and i stupidly thought i had £200 in cash. What i done in my head was add the cheque to the cash. so when the atm said how much cash did i deposit i said £200 not £150. what is gonna happen now? Will i have to go up and actually go in the bank and say what has happened
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