How much should a fully trained automotive technician earn in the uk?

Hi I'm a ford apprentice and am coming up to being qualified in the next few weeks.The thing is I don't know how much I should be earning a week I'm ata qualified (accredited technician award) qualified I'm also air con qualified as well as my nvq 1,2 and 3 I've also done ford approved additional courses to qualify as a ford technician with these qualifications I wondered what is a fair wage for me to earn I'm 19 and I know my age affects my pay