"i. At 11.30pm on the9th May 2003 , Police Constable Williams was on patrol on the High Street in Pwllheli when he had cause to warn the respondent regarding his behaviour. The respondent was singing a song about Scousers and was affected by alcohol. ii. After the warning, the respondent stopped singing and the Constable walked away. iii. The respondent then started singing the same song across the road from the Turkish Takeaway within sight of the Turkish staff but had replaced the word Scousers with Turks. The song's contents was as follows: Build a bombfire, built a bombfire, put the Turks on the top, put the Egypts in the middle and burn the fucking lot. iv. The song was inappropriate and would have caused alarm to members of the public in the area at the time and inside the fast food establishment. v. The respondent was arrested and later charged with racially aggravated disorderly behaviour. 4. On behalf of the respondent, it was contended on a submission of no case, that the arrest was unlawful withinsection 5(4) Public Order Act 1986 andsection 31(3) of the Crime and Disorder Act 1998 as the Constable had failed to warn the respondent about his racially aggravated conduct pursuant to section 31(3)(b) of the 1998 Act. It followed that the Constable had acted unlawfully in purporting to arrest the respondent. 5. On behalf of the appellant, it was contended that the respondent had been duly arrested and that the requirement to warn the respondent after the racially aggravated conduct created an unnecessary obligation on the Constable."
"A person is guilty of an offence if he- (a) uses threatening, abusive or insulting words or behaviour, or disorderly behaviour ... within the hearing or sight of a person likely to be caused harassment, alarm or distress thereby."
"A constable may arrest a person without warrant if- (a) he engages in conduct which a constable reasonably suspects to constitute an offence falling within subsection (1)(c)..."