There’s a number of factors that can affect your salary. One factor that you might not think about however is age. In the UK, the average salary for 18 year old uk can differ from yours because of the age group system that they have. Head over to the College of Contract Management’s article and learn more about the UK’s age system. https://www.uniccm.com/blog/average-salary-uk-by-age-group-how-earnings-change-over-time