Willoughby Challenger helps you organise the evidence, deadlines and correspondence needed to challenge a debt purchaser properly. A guided workflow, a structured template library, and the procedural safeguards required to keep your case on the record.
A factual look at how the UK debt-purchase model operates, and why proper documentation matters.
Debt portfolios are typically acquired on a data-only basis at a fraction of face value. The underlying contractual documents often remain with the original creditor.
4–7p
/ £ on the portfolio
Recovery operations rely heavily on automated letter cycles and scoring models. Most accounts proceed without the documents ever being requested in detail.
~80%
of accounts proceed unchallenged
A meaningful proportion of pursued accounts cannot be fully evidenced — whether on contract, assignment, or default notice — when a structured challenge is run.
60–85%
achievable removal rate
"A debt has always been the creditor's to prove. A defence has always been the consumer's to mount. Challenger gives people a disciplined way to do that properly — with structure, evidence, and a clean paper trail."
— Charles-edward Fernandez, Founder, Willoughby Genius
Six structured tools designed to keep a defensive case organised and on the record.
A structured letter library covering 11 challenge routes, with six tailored variants each. Every letter is drafted on its individual legal merits and adapted to the specific case file.
A guided, step-by-step process from initial DSAR through to closure. Each step is sequenced so the case stays organised and procedurally clean.
CCA s.77/78 (Enforceability), LPA s.136 (Assignment), CONC + GDPR (Fair Processing), and Default Notice review. Four documented points that test whether the debt can be properly evidenced.
Formal Dispute Lock (CONC 7.5.3R), Solicitor Verification, and the Triple Clock Tracker — built-in safeguards that keep the case structured and on the record.
Automated tracking of the 30-day DSAR clock, 14-day reminder window, and 7-day final notice. No missed deadlines and a clean documentary trail at every step.
An AI research assistant grounded in 1,300+ UK case law and regulatory entries. Provides cited, case-specific guidance with provenance. Optional £5/month add-on.
A pre-judgment, documentation-led sequence. Court is reserved for cases where disclosure is refused outright.
Subject Access Request to the debt purchaser
Statutory deadline approaches
Final opportunity before escalation
CCA s.77/78 challenge letter
LPA s.136 challenge letter
Default Notice and documentation review
CONC + GDPR challenge letter
Court route only if disclosure is refused
Most cases resolve between Step 3 and Step 6. The court route under DPA 2018 s.167/168 is reserved for situations where the purchaser declines to engage with lawful disclosure requests.
Six groups account for the majority of active UK debt-purchase activity. The platform is calibrated to the documentation patterns associated with each.
Dual-entity structure; concentration of statute-barred accounts
Northern Irish jurisdictional layer; common Notice of Assignment defects
Bimodal outcomes; tends to disengage where documentation is incomplete
Pre-2008 portfolio concentration; s.127(3) considerations
Agent–principal questions frequently relevant
Complex internal structure; assignment documentation often weak
Lowell withdrew after the second challenge letter. CRA marker removed within six weeks — the Triple Clock evidenced a short default notice that could not be contested.
Cabot was unable to produce the Deed of Assignment following the s.78 request and chain-of-custody letter. File closed.
PRA progressed through the full workflow and settled at zero. The combined CONC + GDPR step made continued enforcement unviable.
One-off training. Monthly software. Bank transfer.
One-Off
Monthly
Willoughby Genius membership
Add-On
Willoughby Challenger is operated directly by the team that built it. Bank-transfer subscription keeps the platform independent of third-party billing rails, gives members direct access to the people running the system, and keeps the focus where it belongs — on the case files, the deadlines, and the disclosure work.
Structured
A documented workflow, not improvisation.
Evidence-led
Disclosure, deadlines, and a clean paper trail.
Operational
Built for running the method, not selling outrage.
Learn the doctrine in the Academy. Run the case in Challenger. Two tools, one disciplined approach to defending a UK consumer debt matter.