Under specific situations, a candidate might still be eligible even if their salary is below £25,600 or the usual going rate for their job. 

A candidate might be paid between 70% to 90% of the usual going rate for their job and yet qualify for Skilled Worker visa. Provided their salary is at least £20,480 per year and – their job is in a shortage occupation, or they have a STEM PhD qualification relevant to their job etc.