Dental practice sales fail at a higher rate than most principals realise. A significant proportion of agreed dental practice transactions do not complete — deals collapse after heads of terms have been signed, after legal fees have been incurred, and in some cases after exchange. The failure points are not random. They cluster around a small number of recurring causes, most of which a well-prepared seller can eliminate before marketing or manage once they arise.
This guide covers the eight most common reasons dental practice sales fall through, what each looks like in practice, and what can be done — before marketing, or when a live deal is already in difficulty.
1. CQC Registration Delays and Failures
CQC registration is the critical path item in every dental practice asset sale. The buyer must obtain a fresh registration before they can legally provide regulated dental services. The process runs concurrently with the legal transaction, typically takes 12 to 24 weeks, and cannot be accelerated by either party.
How it causes deals to fail. Registration delays extend the transaction beyond what a buyer — particularly a first-time buyer with personal finances committed — can sustain. Interest on bridging finance, ongoing practice overheads, and the uncertainty of an open-ended wait cause buyers to withdraw. More seriously, if the buyer’s application is refused — on grounds of governance, clinical qualifications, or DBS findings — the sale cannot complete on any timeline.
Mitigation before marketing. A clean, current CQC record is a prerequisite for a smooth sale. Address any compliance gaps before marketing begins. The SPA should include long-stop provisions: a contractual date by which, if CQC registration has not been obtained, either party may withdraw without penalty. Agreeing the long-stop at heads of terms stage prevents this becoming a renegotiation lever mid-process.
2. NHS Novation Complications
NHS novation — the formal transfer of the GDS contract from seller to buyer — runs in parallel with the legal transaction but is controlled by the Integrated Care Board (ICB) and NHS England. It is not automatic, not guaranteed, and does not operate on the same timeline as the conveyancing process.
ICB delays. ICBs have no statutory timeframe for processing novation applications. Delays of four to six months beyond expected completion dates are not uncommon. A buyer with bridging finance committed, or a seller who has already relocated, finds these delays structurally damaging.
Performer number problems. The buyer must hold an NHS performer number to take on the UDA contract. A buyer who is not an NHS performer, or who is changing ICB area, may face additional process running months beyond standard novation.
Novation refused. ICBs retain the right to refuse novation where there are concerns about the buyer’s clinical governance record, performer history, or contractual compliance. A refused novation is a deal-ending event.
Mitigation. Use solicitors with established ICB relationships and direct experience of NHS novation. Include clear provisions in the SPA for pre-novation income: who collects NHS payments, who bears practice costs, and how the seller is compensated if the transition period extends. Long-stop provisions must address novation risk specifically, not only CQC registration.
3. Buyer Financing Falls Away
Dental practice lending is a specialist market. High street banks rarely lend on dental practices; most transactions rely on specialist healthcare finance providers who understand the NHS contract structure and EBITDA methodology.
Mid-process revaluation. Lenders require a formal valuation before approving the facility. When lender valuations are conducted after heads of terms, they may return a lower figure than the agreed purchase price — triggering a funding gap. The buyer must either fund the gap from equity, renegotiate the price, or withdraw.
First-time buyer risk. First-time buyers represent a higher lending risk category. Lenders may require a larger deposit, personal guarantees, or additional security. If the buyer’s financial position changes during the process — an unexpected liability, a change in personal circumstances — finance approval can be withdrawn.
Mitigation. Require evidence of finance before accepting a buyer. Before committing to exclusive negotiations, ask for confirmation that the buyer’s profile and the practice’s financials have been submitted to a specialist dental lender and received a positive initial assessment. Do not exchange without written finance confirmation.
4. Accounts Irregularities in Due Diligence
Due diligence on a dental practice involves a forensic review of three to five years of accounts. Buyers’ accountants are specifically looking for discrepancies, unexplained adjustments, and items that inflate reported profitability or create uncertainty about the income figure on which the price was based.
NHS income vs remittance reconciliation. NHS remittance statements from NHS England are the primary verification tool for NHS contract income. If the accounts show NHS income that does not reconcile with remittance statements, buyers treat this as a serious red flag. Discrepancies are frequently innocent — timing differences, clawback adjustments, accounting classification — but without clean explanation they create buyer doubt that is very difficult to recover from.
Associate payments. Irregularities in associate payment structures — associates paid on terms inconsistent with their contracts, payments not supported by formal documentation, or arrangements that suggest an employment rather than self-employed relationship — trigger both due diligence concern and associate employment status risk.
Personal expenses through the practice. Sellers routinely run personal expenses through the practice. Expenses that are aggressive in scale, poorly categorised, or unverifiable create doubt about the accuracy of the normalised EBITDA on which the practice was marketed.
Mitigation. Engage a specialist dental accountant to prepare a normalised EBITDA statement, reconcile NHS income against remittances for the last three years, and review associate payment documentation before marketing. A data room that pre-empts buyer due diligence questions is the single most effective way to prevent a post-due diligence price chip or withdrawal. For more on what buyers examine, see dental practice due diligence.
5. Associate Employment Status Risk
Associates in UK dental practices are almost universally treated as self-employed contractors. This creates a structural legal risk: if HMRC determines that associates are employees rather than genuinely self-employed, the practice faces retrospective employer’s NICs liability, employment rights claims, and potential back-dated holiday pay obligations.
For buyers, this is a contingent liability on the balance sheet of the business they are acquiring. A practice with multiple associates operating on non-compliant arrangements carries potential exposure that a buyer’s solicitor will either flag as a price adjustment or use as grounds to withdraw from the transaction.
Mitigation before marketing. Review all associate arrangements with a specialist dental employment solicitor before marketing. Confirm that contracts are compliant, that the working relationship meets the self-employment tests, and document the basis of the assessment. Where arrangements are non-compliant, the decision on how to address this — contractual reform, reclassification — should be made before a buyer has sight of the practice.
6. Valuation Gap Post-Due Diligence
The most common cause of dental practice deal failure is a price revision after due diligence — a chip the seller refuses to accept, or one that reopens negotiations in a way that destroys trust.
How it happens. A buyer agrees heads of terms on the basis of an EBITDA figure from the last two or three years of accounts. During due diligence, the buyer’s accountants discover that the EBITDA was overstated: personal expenses were not properly excluded, associate costs were understated, or NHS income was based on projection rather than contract. The revised EBITDA produces a lower valuation and the buyer revises the price.
Mitigation. A robust, pre-prepared data room that matches what was marketed. If the financials in the data room are consistent with the marketed EBITDA, there is no basis for a post-due diligence chip. Have the normalised EBITDA reviewed by a specialist dental accountant before any buyer is given financials, include the normalisation schedule in the data room from day one, and provide remittance reconciliation alongside the accounts.
7. CQC Adverse Inspection During the Process
CQC’s inspection programme runs independently of the sale process. An adverse inspection rating during a live transaction creates an acute problem: the buyer’s due diligence now includes an outstanding regulatory concern that was not present when heads of terms were agreed.
The consequences are not limited to the buyer’s assessment. An adverse rating may be used by the ICB to delay or refuse NHS novation. For buyers using specialist dental finance, an adverse CQC rating may trigger a lender review that widens a funding gap or leads to finance withdrawal.
Mitigation. A pre-sale compliance gap analysis — reviewing CQC standards against current practice operations, identifying and remediating gaps — is standard preparation for any practice with a rating below outstanding. A clean CQC record substantially reduces the risk of a damaging finding mid-transaction. This should be completed before marketing begins, not after an offer is received.
8. What to Do If Your Deal Is in Trouble
The options depend on where in the process the problem has arisen.
Pre-exchange. Before exchange, either party can withdraw without the legal consequences that attach to a post-exchange failure. A deal struggling pre-exchange is recoverable if both parties want to proceed and the issue is one of information, price, or process. Options include: commissioning an independent valuation to resolve a price dispute; providing additional information to address a buyer concern; adjusting deal structure — deferred consideration, vendor loan — to bridge a financing gap.
Post-exchange. After exchange, both parties are legally committed to complete. Post-exchange deal failure is rare precisely because the consequences act as a deterrent. But it occurs — typically where a CQC registration refusal, NHS novation failure, or material adverse change provides contractual grounds to withdraw. In these circumstances, specialist legal advice is essential before either party takes any step.
Bring in specialists immediately. The instinct of sellers in trouble is to manage the situation through their general solicitor or without advice. The most effective response is to bring in specialists: a solicitor with dental practice transactional expertise, a specialist dental broker who has navigated the same failure mode before, and a specialist dental accountant where financial issues are involved. These advisers have seen the same problems many times and know which situations are recoverable.
For a complete guide to the sale process, see how to sell your dental practice. For the due diligence process in detail, see dental practice due diligence.
Get a free confidential dental practice valuation →
Frequently Asked Questions
What are the most common reasons dental practice sales fail?
The most common reasons are: CQC registration delays or refusal; NHS novation complications; buyer finance falling away; accounts irregularities discovered in due diligence; associate employment status risk; a valuation gap arising after due diligence; and an adverse CQC inspection mid-process. Most of these are preventable with proper pre-sale preparation.
How long does CQC registration take in a dental practice sale?
CQC registration for a new provider typically takes 12 to 24 weeks from application. It cannot be accelerated. The registration process runs concurrently with the legal transaction, but if it completes after the SPA’s long-stop date, the deal may fall away. Long-stop provisions in the SPA must account for this realistic timeline.
Can NHS novation be refused by an ICB?
Yes. ICBs retain the right to refuse novation where there are concerns about the buyer’s clinical governance record, performer number status, or contractual compliance. Refusal is uncommon but does occur. The risk is higher with buyers who are not existing NHS performers or who are changing ICB areas. Specialist solicitors with ICB relationships are the most effective mitigation.
What happens if buyer financing falls through before exchange?
Before exchange, the buyer can withdraw. If financing falls away after heads of terms have been agreed, the seller is left to re-market the practice — with time lost, potential information disclosure to the failed buyer, and in some cases damage to practice confidentiality. The most effective prevention is requiring evidence of specialist dental finance approval before exclusivity is granted.
My dental practice deal is in trouble — what should I do?
Act quickly and bring in specialists. A dental solicitor with transactional experience, a specialist broker who has navigated the specific issue before, and a specialist dental accountant are the right team. Do not attempt to manage a failing deal through general advisers — the failure modes in dental transactions are sector-specific and require sector-specific experience to recover from.