The salary trajectory of a an Administrative Assistant ranges between locations and employers. The salary starts at £23,537 per year (estimate) and goes up to £31,267 per year (estimate) for the highest level of seniority.
The estimated average salary for a Administrative Assistant at Pew Charitable Trusts is £24,413 per year or £12 per hour, but some professionals have reported earning up to roughly £43,559 per year (90th percentile). The typical pay range is between £19,101 (25th percentile) and £32,246 (75th percentile) annually. This is based on 1 salaries submitted by Pew Charitable Trusts Administrative Assistant professionals on Glassdoor, as of Jun 2026.