The protests passed fairly uneventfully.
Apparently the police were able to keep 1,000 protesters away from town by not letting their buses reach the town and routing them in such a way as they went home again, instead!
Some people were arrested for a variety of incidents (some public order, bail offences, etc) but events passed off peacefully. Someone did try to cause a riot, but it was stamped on very firmly by the police before it got out of hand.
All praises to the police for handling the situation so well.