Primary regulator and industry sources
UK Finance and the PSR provide the authoritative loss and reimbursement totals. We cross-check both before publishing, and prefer the regulator figure where the two differ.
No press-release figures
We exclude vendor surveys, single-bank releases and cyber-firm "annual cost of fraud" projections. They use inconsistent definitions and rarely back-revise.
Like-for-like comparisons
Where definitions changed mid-period (for example, the APP categories in 2023) we restate prior years using the new definition so the trend reads cleanly.
Reimbursement reported separately
The voluntary CRM code and the new mandatory regime are reported separately, so trends before and after October 2024 stay legible.