Does anyone know the stages of making a complaint as work is blocking my progression upwards to become a Sergeant in the Met Police.....I have worked for 10 years and they are blocking me taking exams to move upwards....they are bullying me also....I am BAME and I would like any advice to get fast results as now I cannot sleep properly due to anxiety....the supervisors/sergeants who I need to complain to are trying to oust me by telling me I need to retrain after I have trained plenty of PC's who have progressed pass me. I know this is going to lead to legal advice but what are my first steps to take. Thank you in advance for any advice given or from anyone else who has been in this position...