Minimum wage rates for Employees in the UK, valid from April 2020 :
25 year old & over £8.72 minimum per hour
21-24 year olds £8.20 minimum per hour
18-20 year olds £6.45 minimum per hour
Under 18 years £4.55 minimum per hour

25 year old & over £8.72 minimum per hour
21-24 year olds £8.20 minimum per hour
18-20 year olds £6.45 minimum per hour
Under 18 years £4.55 minimum per hour