Bar tabs (in addition to tipping culture) are less common outside of NA. It is however quite common to leave the change from say a £5 note for a £4 beer. This i

Bar tabs (in addition to tipping culture) are less common outside of NA. It is however quite common to leave the change from say a £5 note for a £4 beer. This is purely down to the convince (no need to wait for your change) and frictionless nature (the bartender already had your tip) of the transaction.