“Oi” and “chop-chop” are two phrases that are used in both Singapore and Britain
As “Oi” has connotations of disapproval, it is considered to be slightly offensive if it is used in situations where a more polite register is expected, e.g. while speaking to strangers in public, people in the workplace or one’s elders.
“Eh, quick leh, late oreddy. Chop chop kali pok, can?!”