A dispersal order is being enforced in a bid to crackdown on anti-social behaviour affecting businesses.
The special measure has been introduced by police and came into force at 4pm today in Sturry.
The dispersal order gives officers the power to move on any individual who they suspect is involved, or likely to become involved in, harassment, alarm or distress.
A designated area where the measure is in force has been set out by officers and anyone asked to leave can not return within 24 hours.
The order will remain in place until 3.59pm on Sunday and failure to comply with an instruction to leave the area is an offence that risks arrest.