A Decade in Corporate Procurement. Now Building the Same Discipline Into Trade Businesses.
I'm Denis Curtin, founder of Curtin Commercial Consulting. Before starting CCC I spent 10 years in retail procurement and category management — B&Q, Screwfix, Castorama France, Castorama Poland — progressing from Product Sourcing Manager to Product Lead, and responsible for around £80m of category spend at senior level, delivering £4.5m in savings in 2025 alone.
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I left that world to bring the same commercial discipline to the businesses that don't have a corporate procurement function of their own — the owner-managed, project-based trade and construction businesses actually getting things built, without always knowing whether each job is making them money.
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Qualifications: CIPS Level 4 (procurement), BSc Earth & Ocean Science, Introductory Financial accounting (Open University).
Methodology
I don't rip out how you already work to force a one-size-fits-all system. Every engagement starts with a proper diagnostic of your current job costing and quoting process before I build anything — and every system comes with training and handover, so your team can run it without depending on me indefinitely.
Ready to transform your commercial visibility? Start your strategic journey with a professional consultation today.
MY METHODOLOGY
Commercial visibility meets operational efficiency.
01
Commercial Health Check
A short paid diagnostic of your job costing, quoting and margin visibility — the lowest-risk way to see the gaps before committing to anything.
02
System Build
A bespoke system for job costing, cash flow and quoting — built around how your business already runs, not a rip-and-replace of your existing tools
03
Commercial Retainer
Ongoing support once the system's live — a monthly numbers call and system upkeep, sized for a business too small to need a full-time commercial function.
Specialized PROCUREMENTÂ Capabilities
Where I focus my commercial energy to drive your growth.
01
Quotation & Tendering Support
Help pricing and structuring competitive quotes and tender submissions, so you're bidding with confidence and margin in mind, not guesswork.
02
Spend & Supplier Analysis
A clear picture of what you're actually spending, with which suppliers, and where the savings are — the same analysis behind £4.5m saved in a single year at corporate level.
03
Negotiation Planning
Preparation and strategy for supplier negotiations, from contract renewals to one-off deals — built on a decade of negotiating at corporate scale
Why Work With Me
No Lock-In
Every system is built around how you already work — Excel, Power Query and VBA, or Power BI once you've outgrown Excel — never forcing you onto a platform you don't need.
Straight-Talking, Not Corporate
No jargon, no 40-slide decks, no consultancy fluff. Just practical systems explained in plain English, built to be used — not to look impressive in a boardroom.
Full Handover, No Dependency
Every build comes with proper training so your team can run and maintain it themselves — you're not locked into needing me forever.
Ready to Transform Your Business Strategy?
Book a strategic consultation with Curtin Commercial Consulting today and discover how I can drive measurable success for your organization.