The estimated average salary for a Inbound Customer Service Representative at Firstsource Solutions is £22,359 per year or £11 per hour, but some professionals have reported earning up to roughly £33,130 per year (90th percentile). The typical pay range is between £18,704 (25th percentile) and £27,194 (75th percentile) annually. This is based on 9 salaries submitted by Firstsource Solutions Inbound Customer Service Representative professionals on Glassdoor, as of Jul 2026.