The salary trajectory of a Customer Development Manager ranges between locations and employers. The salary starts at £38,435 per year (estimate) and goes up to £84,894 per year (estimate) for the highest level of seniority.
The estimated average salary for a Customer Development Manager at Mars is £131,658 per year or £63 per hour, but some professionals have reported earning up to roughly £209,959 per year (90th percentile). The typical pay range is between £104,601 (25th percentile) and £169,315 (75th percentile) annually. This is based on 25 salaries submitted by Mars Customer Development Manager professionals on Glassdoor, as of Jul 2026.