We are a strategy consulting firm specialising in commercial due diligence (CDD), market intelligence, strategy consulting and performance improvement.
PMSI is a specialist strategy consultancy, offering Commercial Due Diligence services and corporate strategy advisory across four key verticals: Built Environment; Business Services, Education, and Technology; Industrials; Pharma & Healthcare
30+
Years of experience
Generating edge
We help investors find and assess opportunities, build conviction, and gain a competitive edge.
- Commercial Due Diligence
- Market mapping
- Opportunity identification
- Competitor intelligence
- Buy-side strategy support
On the buy-side, PMSI specialises in commercial due diligence, leveraging our sector experience to provide high-quality independent advice to institutional investors and management teams across the UK lower mid-market.
Our services consist of thorough analysis of target markets, sizing and growth forecasting, evaluation of competitors and the wider landscape, comprehensive review and benchmarking of a target’s performance, and identification of future growth areas. Our approach has helped inform decisions and drive post-deal growth planning for investment teams on hundreds of transactions.
Realising value
We help clients showcase value, strengthen positioning, and support a smooth, confident exit process.
- Vendor Commercial Due Diligence
- Bolt-on CDD support
- Market entry assessment
- Strategic reviews
- Competitor intelligence
On the sell-side, PMSI’s vendor commercial due diligence service provides an unbiased assessment of a company’s position in the market, supporting transactions for management teams, advisors and potential investors. Our approach consists of analysis of a company’s past performance, bringing to life what makes the target unique and valuable, reviewing business plans to appraise potential opportunities and risks, and in-depth characterisation of UK and international markets and competitive landscapes.
This approach supports transaction stakeholders by demonstrating the asset’s strengths and capabilities, maximising valuation, whilst also delivering actionable insight for the management team that has value well beyond the timescales of a transaction, uncovering paths towards new growth post-deal.
Enabling change
We help businesses unlock growth, improve their positioning, and make confident, long-term decisions.
- M&A opportunity identification
- International expansion support
- Service line development
- Market mapping
PMSI’s services to its clients extends to wider advice on growth strategy, where we work with investors and management teams to discover and assess entry for new business lines or geographies, and bespoke approaches to winning share and developing new propositions.
Our previous strategy work has covered many areas, including expansion into international markets, assessment of new product / service offerings and features, M&A strategies (e.g. buy-and-build), and origination work to drive inorganic growth.
Our clients
We advise corporate organisations, private equity houses and banks throughout the investment cycle, enabling informed strategic decisions. Our private equity clients focus on the UK lower mid-market’s high-growth businesses, while our corporate clients – from smaller firms to multinationals – seek growth strategy and commercial due diligence for bolt-ons. We also help banks evaluate investments with sector expertise.

Innovation, expertise, and leadership
Are you looking for the professionalism, capability and scope of the larger management consultancy houses delivered through a personal boutique service culture?
