Could the average salary for 23 year old uk be more than yours? Depending on your age, different age groups may be making more or less. In the UK, the amount of pay you receive increases the further you are in the age group, meaning that the average salary will change as you grow older. Find out more about the differences in salary within the UK at the College of Contract Management. https://www.uniccm.com/blog/average-salary-uk-by-age-group-how-earnings-change-over-time