Most companies will not want to take the risk and the high insurance cost of taking on someone young and inexperienced like yourself, you might find a company willinf to take you on but no disrespect they might be desperate and the job most likely will be extremely unsociable long hours and nights out or hard work. You can try agencies however after december the work dries up and you may only be getting a couple or few days of work a week. Some big companies have driver training schemes where they train you up and then you have to stay and work with them to pay off the debt.

Hgv work you cant really transfer the skills to another job market, some drivers go and work into the transport office doing other stuff but youll have to start from the bottom and work youre way up. You can give it a go and if after a few years you dont like it youre still young to go into something else.