The Dispute Resolution Regulations state that if you have a grievance you are required to send a written statement of it to your employer. Your employer must then arrange a meeting to discuss your grievance.
You have a right to be accompanied to this meeting by someone who works with you or a trade union official. The meeting must be held at a time and place which are reasonable for you and anyone accompanying you.
After the meeting the employer must tell you what he or she has decided. If you do not agree with his or her decision, you have a right of appeal and your employer should inform you of this.