Customer records, supplier records, contact lists — the data your business depends on lives across CRMs, spreadsheets, and legacy databases, often in more than one place at once. Over time those records drift out of date, disagree with each other, and quietly cost you. Acennan checks every record against authoritative sources, surfaces what's changed, and lets you authorise the corrections before anything touches your live data. Across every system you use. Without needing you to pick one as the master.
THE COST OF BAD DATA
B2B contact data decays at up to 30% a year. People change roles, companies move, suppliers get acquired, sole traders incorporate, businesses dissolve. None of it announces itself in your CRM. The records just slowly stop matching reality.
The cost is invisible until it isn't. Outreach hits dead inboxes. Invoices get sent to the wrong address. AI agents recommend the wrong things because the data underneath them isn't true. Two records of the same customer get treated as two different customers, and nobody notices until the relationship is already strained.
The work to keep records clean is real, but it's never finished, and it sits below the things that feel urgent. So most businesses don't do it — until they're paying for it somewhere else.
HOW IT WORKS
Most clients begin with a free Audit. From there it's either a one-off Cleanse, or an annual engagement with the Engine for ongoing hygiene.
Send us 100 of your real records. Within five working days you'll have a one-page scorecard showing what's in your data, what it's costing you, and what to do next. No commitment, no upsell — if the scorecard tells you your data is fine, that's a good answer.
FreeA full clean of your records — across whatever systems you use. Profiling, deduplication, and verification against authoritative sources. We surface every correction with the evidence behind it; you authorise and apply the changes. Three weeks, fixed fee.
From £2,950Initial Cleanse plus ongoing checks. New records validated against authoritative sources as they arrive, existing records re-checked for drift, monthly report on what's changed and what to update. Your records stay accurate as your business grows. You stay in charge of what gets applied.
From £650 / monthLIVE AUDIT DEMONSTRATION
Use our sample dataset, or paste your own. Nothing leaves your browser.
The audit you just ran uses the same logic we run for paying clients. If you want it run on 100 of your real records — that's free, five working days.
Get the same diagnostic on your real data. Free. →This is the audit logic running on sample data only. The real audit runs deeper data checks against multiple data validation sources with a manual human-in-the-loop review before delivery.
WHY ACENNAN
Most data cleansing tools need you to pick a master system first. Acennan doesn't. Records can live across your CRM, spreadsheets, and legacy databases at the same time. We'll check each one against authoritative external sources independently. No consolidation forced on you, no system you have to abandon.
Acennan does the work of identifying what's wrong and verifying it against authoritative sources. You see every proposed correction with the evidence behind it, and you decide what gets applied. Your live data doesn't change unless you authorise the change.
Every correction comes with what we found, where we found it, and why we're recommending the change. You can accept, hold, or query each one. Nothing in the process is opaque, including the parts where automation has done the work.
Sources: Gartner · Future Ready Accountant Report 2025 · Instantly 2026
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Five working days. One free scorecard. No commitment.
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