Sch 5 para 21
(1) A person commits an offence if the person resists or wilfully obstructs— (a) a designated officer acting in the exercise of an operational power, or (b) a person who is assisting a designated officer in the exercise of such a power. (2) A person guilty of an offence under this paragraph is liable on summary conviction to either or both of the following— (a) imprisonment for a term not exceeding— (i) 51 weeks on conviction in England and Wales; (ii) 12 months on conviction in Scotland; (iii) 1 month on conviction in Northern Ireland; (b) a fine not exceeding level 3 on the standard scale.