You may have sufficient qualifications however competence comes with experience.
To gain the necessary experience and knowledge you need to be under the supervision of someone with the necessary experience and knowledge, this is where your company is letting you down and breaking the law (Electricity at Work Regulations).... it is the responsibility of your company to ensure yours and others safety, if this meant employing another fully qualified electrician then so be it....Reality of it is you cannot jump into anything with both feet, you need to learn and do everything properly which basically means you need to learn from a competent person, I'm envisaging you are only about 2 years into your apprenticeship? If so it is criminal to expect you to learn on your own.