Prime Minster Tony Blair has backed the decision to ban hoodies and baseball caps at a shopping centre in Kent.
At a press conference to discuss his plans for his third term in office, Mr Blair said "I have total sympathy with that and I totally agree with that."
The Bluewater Shopping Centre wants to crack down on bad behaviour and stop kids frightening other shoppers.
Deputy Prime Minister John Prescott also supports the ban.
Managers at the mall worked out the code of conduct with police after talking to people working at Bluewater and shoppers who use the mall.
Guidelines say intimidating behaviour by groups or individuals, anti-social behaviour including swearing, and wearing clothing which deliberately obscures the face such as hooded tops and baseball caps, will not be allowed.
Anyone who breaks the rules will be asked to leave the centre and not allowed back in.
Mr Blair said people were fed up with street corner and shopping centre thugs and wants to crack down on yobbish behaviour.