The average salary for an Actuary is £53,998 per year. Most people with this job move on to other positions after 20 years in this field.Experience has a moderate effect on income for this job.ctuary Salary. (United Kingdom). The average salary for an Actuary is £53,998 per year. Most people with this job move on to other positions after 20 years in this field. Experience has a moderate effect on income for this job. A skill in Financial Modeling is associated with high pay for this job.