Diligens

Don't inherit the debt

From 6 April 2026, strict liability means you're liable for unpaid taxes in your supply chain, even if you did your due diligence.

We find the hidden entities that create that liability before you pay them.

Verify Who Pays Your Workers
Spot Shell Companies & MUCs
Continuous Monitoring

HMRC Says You Must Audit Your Supply Chain.

But how do you audit potentially thousands of hidden entities?

Mini-Umbrella Company (MUC) schemes split your workforce across hundreds of tiny shell companies. Each one designed to disappear before paying tax, leaving you with the bill.

Your Potential Annual Liability Exposure

50 workers

£400K £1.9M

500 workers

£4M £19M

3,000 workers

£24M £112M

Estimated annual PAYE + NIC exposure based on £16.50-£50/hour rates. Even 1% non-compliance represents significant risk.

Legitimate Model

Single Large Employer

One registered entity, proper PAYE compliance, transparent tax payments

MUC Model

Thousands of Micro-Entities

Corporate fragmentation, tax arbitrage, hidden liability chains

What is strict liability?

Due diligence alone no longer protects you. Under the April 2026 rules, if the entity paying your workers doesn't pay their tax, you inherit that debt. No excuses. No defences.

You need to verify the entities, not just check the paperwork.

£1.5B+
Annual tax lost to MUC schemes
43,000+
Suspected shell companies in UK supply chains
100%
Of unpaid tax transferred to you under strict liability
20 Years
HMRC can look back for deliberate fraud (Regulation 80)

Compliance Certificates Are No Longer Enough

Current compliance platforms verify that taxes are calculated and paid correctly. That's essential. But who verifies the entity before you send money? Under strict liability, you need both.

A 2-Layer Defence
1

Organisation Verification

Who actually employs the worker? Who are the directors? Where are they located? Who really owns the entity?

Diligens
Director history & velocity
Ownership structures
Location & address analysis
Phoenix company detection
MUC scheme identification
SIC code fraud indicators
2

Tax Verification & Certification

Are taxes calculated correctly? Disclosed via RTI? Actually paid to HMRC?

Real-time tax verification
RTI submission checks
HMRC payment confirmation
Payslip analysis

Complete Protection

Each layer catches what the other misses. Neither alone is enough under strict liability, but together, every gap is covered.

The Red Flags That Certificates Can't See

We spot the patterns that paperwork can't fake. No AI guesswork, just proven fraud detection heuristics refined from real investigations.

Director Velocity

Is the same person running hundreds of 'separate' umbrellas?

We flag individuals appointed to an impossible number of unrelated companies in short timeframes. If your umbrella's director also runs 200 other 'umbrellas', they're likely a 'mule' in a MUC network.

Clone Clusters

Are dozens of companies registered at the same residential address?

We detect mass registrations of unrelated entities sharing single office suites, P.O. boxes, or even garden sheds. Real example: 487 'umbrellas' registered to one flat. These 'industrial farms' are designed to fragment liability.

Phoenix Companies

Has this director run companies that folded owing tax before?

We trace directors' histories for patterns of companies being 'struck off' with unpaid debts, then the same person starting new ones. Average phoenix cycle: 18 months. They trade, accumulate tax debt, dissolve, repeat.

Offshore Control

Is a UK payroll company being run from overseas?

We detect UK-registered companies controlled by directors with no UK footprint — often in high-risk offshore hubs. Under JSL rules, if the offshore entity 'disappears', you're the nearest solvent UK entity HMRC can pursue.

Name Patterns

Does this company name look algorithmically generated?

Fraudsters use algorithms to mass-generate company names. We detect these patterns like random word combinations, typo-squatting of legitimate brands, and suspiciously similar naming across hundreds of registrations.

Address Anomalies

Is a payroll operation registered to a residential home?

Our geospatial engine flags industrial-scale payroll operations registered to semi-detached homes, flats, or farmhouses. Legitimate payroll providers don't run from spare bedrooms.

Shelf Companies

Is this a dormant company suddenly 'woken up' with new directors?

Old, dormant companies are purchased and 'reactivated' with fresh directors to feign maturity and stability. A company registered in 2015 that suddenly has new directors and starts processing payments in 2025 is a red flag.

Zombie Status

Is this company even legally allowed to trade?

You cannot legally pay a dissolved company, but it happens. We flag entities that are 'Dissolved', in 'Liquidation', or have zero active directors. If you're sending money to a zombie company, that's a serious compliance failure.

SIC Code Mismatch

Is a 'management consultancy' actually supplying labour?

Labour suppliers often hide behind vague SIC codes like '70229 - Management Consultancy' to avoid HMRC's targeted scrutiny. We cross-reference what they claim to do vs what they actually do.

From Forensic Deep-Dive to 24/7 Guardian.

Diligens offers a hybrid monitoring journey.

Identify Your Blind Spots

1 / 15

Does your screening detect 'Nominee Velocity', where officers hold high volumes of appointments across unrelated sectors?

Frequently Asked Questions

Everything you need to know about the April 2026 strict liability shift and how to protect your agency.

Diligens | Recruitment Supply Chain Risk Management