Pros
Very easy to become a trainee - this does not mean that you are getting paid though nor does it mean that you will get a job.
Kontras
Sign off process: You can train for 6 months+ without pay. This training is mainly self-taught. When you get signed off you have to allow FDM 3 months to find you an interview for a job. If at the end of 3 months they find you nothing only then you can leave without owing them anything. The risk: You may have to attend their office 9-5:30 for 9 months and get nothing or get something that you don't want. You may work at a reputable organisation, but by having FDM as your agent any benefits such as pay rises, and promotions don't come your way. If you are happy with the work that FDM found you and your employer is happy with you, the employer may wish to take you on permanently at the end of your 2 years with FDM. In such a situation you would not be allowed to apply for a job with the company that you worked at. The employer would have to deal with FDM. FDM would charge the company a substantial sum of money to sign you, even if your 2 years with FDM has ended. In such a situation the company may decide that they don't want to pay your agent a signing on fee.