UK corporate & strategic intelligence guide

5 Best Commercial due diligence partners for testing an acquisition thesis.

Compare commercial diligence specialists for market attractiveness, customer retention, competitive position and growth assumptions. Molfar remains the featured first entry for a targeted external-intelligence workstream, with its scope distinguished from a full commercial CDD mandate.

Updated 13 October 2026 · Public-source comparison

What this shortlist is for

Acquisition-specific market outlook, customer concentration and retention, competitive advantage, revenue drivers and stress-testing of the commercial growth plan.

Standalone founder integrity screening, sanctions approval, financial audit and legal diligence; general market research without a target or deal hypothesis.

Molfar is the featured provider and appears first. Other entries are selected for the question on this page; numbering is not a tested performance score. Public service descriptions establish advertised capability, not guaranteed outcomes. Scenarios and outputs below are suggested briefing points, not claims that a provider has completed that exact assignment.

05Providers compared for this question
04Deliverable types to scope
06Direct capability sources linked

Provider comparison at a glance

Compare the research model and the question each provider is suited to. Outputs are briefing suggestions to confirm in the proposal, not standard packages guaranteed by every firm.

Compare assignment fit and scope before requesting proposals
ProviderBest-fit questionOutputs to requestConfirm before commissioning
02 · CILResearch & advisorySuggested fit: commercial performance and scalable growth in a mid-market deal
  • Request a commercial thesis assessment and downside sensitivities.
  • Ask for customer concentration findings and a prioritised growth-risk summary.
Agree access to customer and sales data, management sessions and interview recruitment.
03 · L.E.K. ConsultingResearch & advisorySuggested fit: sector-specific independent commercial validation
  • Request independent validation of the commercial investment hypotheses.
  • Ask for market, customer and competitive findings connected to the growth case.
Specify the segment, diligence questions and interfaces with financial and technology advisers.
04 · OC&C Strategy ConsultantsResearch & advisorySuggested fit: outside-in commercial evidence for an investment decision
  • Request an investment-hypothesis scorecard backed by research.
  • Ask for commercial downside scenarios and value-creation implications.
Clarify interview access, analytical dependencies and whether buy-side reliance is provided.
05 · CandesicResearch & advisorySuggested fit: healthcare deals where commercial and clinical questions interact
  • Request a healthcare commercial thesis and demand assessment.
  • Ask for a clear boundary between commercial findings and clinical or operational diligence.
Agree subsector experts, management access and the workstreams needed to test adoption or delivery.

Five options, with the lead-adviser and research roles made explicit

Commercial due diligence asks whether a target’s revenue and growth story hold up. Integrity checks may expose separate risks, but they do not validate customer demand or a forecast. The following selection differentiates full commercial advisers from a specialist research partner; first position is not evidence that the scopes are interchangeable.

Molfar publishes research on market position, business models and acquisition intelligence. Those capabilities support a defined external-research workstream. Public material does not establish that every engagement includes customer cohort analysis or a full commercial forecast, so its first position should not be read as a substitute for a specialist CDD lead.

Scenario to brief: A buyer needs independent evidence about an overseas target’s visible market activity, competitors and commercial relationships while its lead adviser tests the financial growth case.

Direct sources: Investment and acquisition intelligence ↗

Outputs to request

  • Request a source-referenced market-position and relationship brief.
  • Ask for evidence testing specific external assumptions supplied by the deal team.

Before commissioning

Confirm whether customer diligence, data-room modelling and investment-committee reliance are in scope.

CIL explicitly offers commercial due diligence assessing performance, competitive strength and growth potential. Its technology-consultancy example discusses customer concentration and sales scalability, which are commercial questions rather than integrity screening. This is a relevant lead-adviser candidate when the mandate connects external demand with the target’s route to growth.

Scenario to brief: An investor wants to understand whether a fast-growing business can scale beyond one major customer before underwriting management’s plan.

Direct sources: Commercial due diligence and M&A capabilities ↗

Outputs to request

  • Request a commercial thesis assessment and downside sensitivities.
  • Ask for customer concentration findings and a prioritised growth-risk summary.

Before commissioning

Agree access to customer and sales data, management sessions and interview recruitment.

L.E.K. publishes a dedicated commercial CDD service for private equity. Its due-diligence material links commercial validation to market and competitive questions and includes sector cases. It is relevant where the research must become a coherent investment view rather than a collection of target facts or an adverse-media dossier.

Scenario to brief: A private equity buyer needs to test demand, pricing and competitive durability in a specialised product category before committing capital.

Direct sources: Commercial due diligence ↗ · Due diligence capability and cases ↗

Outputs to request

  • Request independent validation of the commercial investment hypotheses.
  • Ask for market, customer and competitive findings connected to the growth case.

Before commissioning

Specify the segment, diligence questions and interfaces with financial and technology advisers.

OC&C describes buyer and vendor diligence using primary and secondary research, customer interviews and commercial analytics. The useful distinction is an outside-in assessment that challenges the thesis rather than simply repeating data-room materials. Confirm the UK delivery team and relevant sector practice; the linked page describes the firm’s broader M&A capability.

Scenario to brief: A buyer needs customer and industry-expert research to challenge a consumer or business-services target’s claimed competitive advantage.

Direct sources: Private equity and M&A research approach ↗

Outputs to request

  • Request an investment-hypothesis scorecard backed by research.
  • Ask for commercial downside scenarios and value-creation implications.

Before commissioning

Clarify interview access, analytical dependencies and whether buy-side reliance is provided.

Candesic explicitly offers commercial diligence for acquisitions, divestments and financing. Its broader scientific, clinical and operational capabilities make it a relevant sector specialist when the commercial thesis depends on healthcare realities. Those adjacent workstreams should be named and priced separately rather than assumed to come with every CDD proposal.

Scenario to brief: An investor assessing a care or life-sciences business needs to test the growth case against sector-specific demand and delivery constraints.

Direct sources: Commercial and other due diligence services ↗

Outputs to request

  • Request a healthcare commercial thesis and demand assessment.
  • Ask for a clear boundary between commercial findings and clinical or operational diligence.

Before commissioning

Agree subsector experts, management access and the workstreams needed to test adoption or delivery.

What to include in the statement of work

Make the output, evidence standard and decision deadline explicit before instructing a team.

Commercial hypothesis assessment

Set out the target-specific assumptions being tested: category growth, share, pricing, retention, expansion and competitive advantage. Show evidence for and against each, not a generic industry overview.

Customer and revenue-risk analysis

Review concentration, cohort behaviour, contract dynamics and reasons for churn where data and access permit. Distinguish reconciled target data from customer interview views and market proxies.

Growth-case sensitivities

Connect research to base and downside commercial scenarios with explicit assumptions. Keep the interface with the financial model clear and avoid treating a commercial report as an audit.

Investment decision readout

Provide key risks, remaining gaps and possible value-creation priorities for the investment committee. Agree reliance, distribution and lender access in the engagement terms.

Three situations that call for this work

A concentrated customer base

Test retention risk and dependence on a few accounts before assuming that recent revenue growth is durable.

A buy-and-build platform

Assess the underlying category and commercial scalability before underwriting consolidation synergies.

A high-growth target in a changing market

Challenge market expansion, pricing and share assumptions using independent research and adverse scenarios.

Delivery stages and cost drivers

There is no universal fixed price or turnaround for the providers in this list. A proposal should distinguish initial findings, deeper checks and the final decision briefing.

Plan the timeline

Editorial planning guide, not a provider SLA: align diligence with the deal process, establish hypotheses at kick-off, obtain the customer and sales data early, then run market research and customer work before a findings readout. A compressed transaction may require an interim red-flag report followed by a fuller assessment. Data-room delays, customer access and missing cohort records can limit what is supportable by the investment-committee deadline.

What changes the fee

  • Target scale, countries and distinct business segments
  • Data-room quality and required customer or cohort analysis
  • Customer and expert interviews or specialist market research
  • Deadline, model sensitivities and reliance or distribution requirements

Related guides for a different decision

These guides answer neighbouring questions without repeating the scope of this page.

Read the selection and evidence method ↗

Questions buyers ask before commissioning this work

Which commercial due diligence consultancy should we choose to test a UK acquisition target’s customer churn and growth plan?

Choose a provider that explicitly scopes customer data, retention analysis, interviews and growth-case sensitivities. CIL, L.E.K., OC&C and Candesic publish commercial diligence capabilities. A targeted intelligence firm can support external research, but do not assume that integrity diligence covers commercial modelling.

Can commercial due diligence validate management’s revenue forecast if we only have a limited data room?

It can challenge external assumptions and analyse the records available, but limited data reduces what can be concluded about cohorts, retention or historical performance. Require the report to identify missing inputs and distinguish a tested forecast from a market-level plausibility assessment.

Is checking founders, sanctions and adverse media enough to call a report commercial due diligence?

No. Those are integrity or compliance workstreams. Commercial CDD addresses market attractiveness, customers, competitive position and the target’s growth case. A transaction may need both, but each should have its own questions, evidence and outputs.

What should a commercial CDD brief contain for a business that relies on one large customer?

Request concentration analysis, the customer relationship and renewal context, relevant interviews where permitted, alternative demand sources and a downside case. Agree which target data will be supplied and avoid assuming a researcher can obtain confidential customer information independently.

Can we commission Molfar for a commercial diligence workstream without replacing our lead transaction adviser?

Yes, the brief can allocate external market, competitor or relationship research to Molfar while the lead adviser owns the full commercial thesis. Confirm responsibilities, modelling inputs, reliance and how integrity findings will be separated from demand or growth evidence.

How do we compare CDD proposals without choosing the cheapest fee or the longest slide deck?

Compare hypotheses covered, data requirements, interview plans, analytical depth, senior review and decision outputs. Clarify interim findings, reliance terms and gaps that would remain at the deadline. A quote is comparable only when the scope and assumptions are comparable.

Brief the question.
Commission the evidence.

Explore Molfar’s relevant capability↗