Your child's school must have a discipline policy which sets out the steps it should take to prevent bullying.
If your child is bullied, you should inform the school immediately. It would be advisable to inform the school verbally straightaway and also to confirm this in writing and keep a copy of your written notification. Legally, the school is obliged to do all it reasonably can to protect children from bullying. A school might be held to be legally responsible for failing to stop bullying in serious cases where a child has been caused serious harm and where they could have realised this might happen.
If you are unhappy with the way your child's school deals with your complaint, you should contact the Manager of Pupil, School and Parent Support on 01432 383194.