Some 15,000 people marched on Saturday in the Apprentice Boys parade in Derry.
Interest in the parade as it passed through the city centre was limited mainly because of the incessant heavy rain and also because many of the shops along the route closed for the day.
Some 450 police officers were on duty and high security screens were erected at potential flashpoints but the three-hour parade, which included 125 bands and more than 100 marshals passed, off peacefully.
The police however said they were "very disappointed" at the Apprentice Boys' decision to breach an agreement they had reached with the nationalist Bogside Residents Group prior to Saturday's parade.
As part of the deal, the Apprentice Boys agreed not to play music as the nine parent clubs walked along the stretch of the city's historic walls overlooking the Bogside. The walk around the walls takes place before the main parade.
The police officer in charge of security, Supt David Hanna, said: "The Apprentice Boys failed to adhere to all of the conditions they had agreed with the Bogside Residents Group. That is something which we will look at because it could have implications for future parades in this city."
He said he only had to deploy three-quarters of the officers available to him because "the public order incidents which followed the parade were on a minor scale compared with what happened in previous years".
Eight people, most of them teenagers, were arrested during disturbances after the parade. The arrests took place in Fahan Street in the Bogside after petrol bombs, paint bombs, stones and bottles were thrown at police officers. No-one was injured but several cars belonging to local residents were damaged.