Free compliance & procurement tools
Three practical decision-support calculators built around current UK regulation. No sign-up, no email gate, no shared data — just the answer.
These tools were built to answer the questions our clients most often ask before they instruct us: can I challenge this back-bill?, do I have to do ESOS this cycle?, would a Climate Change Agreement actually save me money?, is the rate I’m being quoted reasonable?, and what does my MPAN actually say? Each one uses the live thresholds and prices published by Ofgem, the Environment Agency, HMRC and Octopus Energy. The calculators run entirely in your browser; the live-rate tool fetches a single read-only quote on demand and we don’t store any postcode you enter.
Use them as a first sanity check. If the result is borderline, or if you’d like the calculation written up with the supporting regulation references, we’ll prepare a free written case review on request.
Back-billing recovery calculator
Estimate how much of an unexpected catch-up bill is likely to fall outside Ofgem’s 12-month back-billing rule.
Open the toolESOS Phase 4 qualification checker
Test your headcount, turnover and balance sheet against the Phase 4 thresholds before the 5 December 2027 deadline.
Open the toolClimate Change Levy eligibility checker
See whether your sector qualifies for a Climate Change Agreement and what the discounted CCL bill would look like.
Open the toolLetter generator — disputes & claims
Pick a template — back-billing dispute, deemed-rate exit, smart-meter GSoP £40 claim or water leak allowance — fill the fields, copy or download. Cites the exact licence condition.
Open the toolLive UK grid — carbon intensity & fuel mix
Refreshed every five minutes from the National Grid ESO open feed. gCO₂/kWh, percentage renewables and the current generation mix — useful for ESOS scope-2 reporting and load shifting.
Open the toolLive tariff benchmark — Octopus variable
Enter a postcode and see the current Octopus variable unit rate (p/kWh) and standing charge for that GSP region. A transparent independent reference price for spotting bad deals.
Open the toolMPAN decoder — supply number lookup
Paste the 21-digit MPAN from your electricity bill. We validate the check digit, identify your distribution network operator, and decode the profile class so you know exactly what kind of supply you have.
Open the toolHeating & cooling degree days
Last 12 months of HDD and CDD for any UK postcode, drawn from Open-Meteo. Use it to weather-normalise consumption and stress-test supplier quotes that assume baseline weather.
Open the toolMPRN decoder — gas supply lookup
Validate the 6 to 10-digit Meter Point Reference Number from your gas bill. Identify the four UK Gas Distribution Networks and the single national emergency line.
Open the toolWater company finder
Postcode in, your wholesaler out — name, emergency number, leak line, customer service and complaint route. Covers 12 major regional water companies and the Scottish public model.
Open the toolThese calculators give general guidance based on the inputs you provide. They do not constitute regulated advice and they cannot account for facts that aren’t entered — meter read history, contract clauses, group structure or sector-specific carve-outs. For a definitive answer, request a free written case review and we will respond inside one working day.
Request a free written case reviewSend us one bill. We'll send back every overcharge — and the cheapest legitimate replacement.
Whether you run a Mayfair restaurant group or rent a flat in Salford, the audit is the same and the fee is the same: nothing, unless we save you money.