2.  The following provisions of Schedule 4 to the Police Reform Act 2002 shall, to the extent not already in force, come into force on 23rd December 2004–

(a) paragraph 2 (power to detain etc.);

(b) paragraph 3(2) (power to require name and address of person acting in an anti-social manner); and

(c) paragraph 4 (power to use reasonable force to detain person).