The Apprenticeship minimum wage is currently £3.50 per hour, although many employers choose to pay above and beyond that. Many employers also offer performance related pay rises throughout the apprenticeship, as they would with any other employees. If you are 19 years old when you complete your first year as an apprentice, then your wage will increase to the national minimum for your age category.
An apprenticeship can open up opportunities where previously it would be very difficult to find work. Don't forget an employer will also pay you for your study time and most employers will regularly review your salary. One year of some small financial pain could lead to a career of financial gain.
If doing an apprenticeship would be financially difficult for you, you may be able to receive some support through the Kevin Lynes Apprenticeship Scheme.