An intern’s rights depend on their employment status. If an intern is classed as a worker, then they’re normally due the National Minimum Wage.
Internships are sometimes called work placements or work experience. These terms have no legal status on their own. The rights they have depend on their employment status and whether they’re classed as:
a worker
a volunteer
an employee
If an intern does regular paid work for an employer, they may qualify as an employee and be eligible for employment rights.