The salary trajectory of a Machine Operator ranges between locations and employers. The salary starts at £24,443 per year (estimate) and goes up to £30,441 per year (estimate) for the highest level of seniority.
The estimated average salary for a Machine Operator at GSK is £50,526 per year or £24 per hour, but some professionals have reported earning up to roughly £69,709 per year (90th percentile). The typical pay range is between £43,055 (25th percentile) and £59,921 (75th percentile) annually. This is based on 5 salaries submitted by GSK Machine Operator professionals on Glassdoor, as of Jul 2026.