Four kinds of structural failure. All verified, all corrected.
A note on how these are presented
We don’t publish client names or identifying details. Engagements are confidential by design — every example below is anonymised accordingly, with sector, scale, and financial outcome preserved and everything else removed.
Some of the work below was delivered by our team prior to CostMaster’s formation. The corrections are real. The numbers are verified against invoices, credits, or binding contract terms — the same standard we hold every current engagement to.
Example — acquired portfolio, incomplete records
A multi-site portfolio, inherited through acquisition, had no reliable record of what it was paying for.
Site details were incomplete. Suppliers were unclear. Contracts were missing. Physical meters didn’t match what was being billed.
A full audit of every site and every bill found address errors, incorrect meter references, wrong meters, excess capacity charges, and multiplier errors.
Verified recovery: £218,000 in credits and refunds, confirmed within the first year.
Delivered by our team prior to CostMaster’s formation.
Example — duplicate and overlapping billing, multi-supplier portfolio
A logistics and transport group operating 18 sites across three group companies, combined annual energy spend £680,000, had no consolidated visibility across its portfolio — different sites held under different group companies, billed by different suppliers, with no single reconciled record of what was owed where.
A full invoice audit, matching bill periods against meter references site by site, identified duplicate and overlapping charges at six sites across two suppliers. In one instance, a site had already been billed in full for a given quarter across three separate invoices — a fourth invoice then re-billed the same 291-day period in its entirety.
Verified recovery: £31,747.58, matched invoice-to-invoice and confirmed as credited by both suppliers.
Delivered by our team prior to CostMaster’s formation.
Example — billed for a site that no longer existed
A finance team had three years of unpaid invoices for a site they didn’t recognise, with the supplier threatening legal action and disconnection over non-payment.
A site visit found the address didn’t match anything in the portfolio — the building had been demolished years earlier. No meter, no supply, no usage.
When challenged, the supplier confirmed they had never checked the site was occupied, connected, or even standing. Billing had been assigned based on proximity — the company was simply the nearest match on a map.
Outcome: ~£68,000 in invoices cancelled in full, no liability owed.
Delivered by our team prior to CostMaster’s formation.
Example — paid for capacity never delivered
A client spent £126,000 upgrading a site’s electrical supply to 1000kVA, to run new machinery. The upgrade was signed off as complete, and monthly billing reflected the full 1000kVA capacity.
The machines wouldn’t run properly. Fuses kept blowing at the meter.
A site investigation found the supplier had never actually delivered the upgrade — physical supply capacity was still 500kVA, despite the client having paid for the work and being billed monthly for double that.
Outcome: £63,000 refunded by the supplier, and the outstanding meter and supply upgrade completed to the full 1000kVA.
Delivered by our team prior to CostMaster’s formation.
More examples added as engagements are verified and cleared for publication.
Next step
If there is a defined problem, authority to act, and a reason it matters now: