The Government sets a minimum amount workers must be paid for the hours that they work. For under 25s this is called the national minimum wage (NMW) and for those over 25 years of age, and not in the first year of an apprenticeship, it is called the national living wage (NLW). Effective from April 2020, here's the new rates:
25 and over: £8.72 per hour;
21 to 24: £8.20 per hour;
18 to 20: £6.45 per hour;
under 18: £4.45 per hour, and;
Anyone classed as a worker is entitled to the NMW or NLW. There are however a handful of exceptions to this rule. These include:
self-employed (if you choose to be);
volunteers (if you choose to be);
a member of the armed forces, and;
family members of the employer, living in the employers home.
The above shouldn't be confused with the Living Wage (often referred to as the 'Real Living Wage') which can easily be researched at livingwage.org.uk.