Worked example: 10% APR → 8.3%; APR remedy c. £450; Commission c. £950; Hybrid c. £700
This is arithmetic, not individualised restitution: the 17% APR proxy and the 2.09% interest are policy parameters. Change either and the average moves materially.
Delta vs scheme: typically £200–£500 per agreement. Stack across even 500,000 underpaid files and the recoverable shortfall approaches £100–£250m; across millions, billions.