Mark Poxton, independent analytical systems consultant

CLIENT WORK / MARKET ANALYSIS · MPA-LPR-001

Who pays their suppliers late

In one line

Every large-company payment report since 2017, about 98,000 of them, joined to sector: who makes suppliers wait, who is getting slower, and what it costs a small firm in cash.

The problem

Late payment drains small firms' cash, and some of them fail because of it. Large UK companies must publish how fast they pay their suppliers every six months. The reports sit in a government register that almost nobody analyses across companies or over time.

The question

Which sectors and which large buyers pay slowest? Who is getting worse? What does a slow payer cost a small supplier in hard cash?

The data

The rules were written down before the run.

What I found

Chart for Who pays their suppliers late

1. Manufacturing makes suppliers wait more than twice as long as finance

2025 reports, median company in each sector (a selection; all 13 sectors with 100+ companies are in the league table file):

Sector Median days to pay Slowest 10% at or above Paid within 30 days
Manufacturing 45 68.5 31%
Wholesale and retail 36.5 61 46%
Transport and storage 35 51 55%
Construction 33 53 56%
Professional and technical 31 59.5 68.5%
Education 25 37 82%
Finance and insurance 21 43 86%

2. Better overall, but one company in ten is getting steadily slower

What it means: the national average hides a group of big buyers moving the wrong way. For a supplier, the trend of a particular customer matters more than the sector average.

3. What a slow payer costs a small supplier

Take a small firm selling £1m a year to one large customer, borrowing at 7.75% (Bank Rate of 3.75% plus a typical small-business margin of 4%):

Customer Days to pay Extra money tied up vs a 30-day payer Extra cost a year
Median large company 32 £5,500 £425
Slowest 10% overall 57 £74,000 £5,700
Median manufacturer 45 £41,000 £3,200
Slowest 10% of manufacturers 68.5 £105,000 £8,200

For a small firm making a 5% margin, £8,200 is the profit on £164,000 of sales, handed over for nothing more than waiting.

4. What the new value figures show, and why they cannot be taken at face value

Under the 2025 rules, the median large company paid 14% of its invoice value late against its own terms. A third of reports show more than a quarter of the value paid late.

The register's money totals cannot be summed with confidence, though. One six-month report claims £246bn of supplier payments, more than the annual turnover of almost any UK company. Others are similarly out of scale. The figures are self-reported and unaudited, and some are plainly mis-keyed. That is a finding in its own right: nobody checks this register.

What it means for a business

How I would run this for a client

Limits

Hostile self-audit

Sources

Ask me about this work All seven client case notes