The salary trajectory of a a Field Service Engineer ranges between locations and employers. The salary starts at £30,797 per year (estimate) and goes up to £100,662 per year (estimate) for the highest level of seniority.
The estimated average salary for a Field Service Engineer at Unity Lab Services is £33,170 per year or £16 per hour, but some professionals have reported earning up to roughly £51,876 per year (90th percentile). The typical pay range is between £27,120 (25th percentile) and £41,393 (75th percentile) annually. This is based on 1 salaries submitted by Unity Lab Services Field Service Engineer professionals on Glassdoor, as of Jul 2026.