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ABOUT WILVERLEY CONSULTANCY
Independent advisory built on 25 years on both sides of the deal
Wilverley Consultancy was founded by David Parsons in 2018, an independent commercial advisor with over 25 years of experience in technology procurement and commercial management across some of the world's most complex buying and selling environments.
His career started with two globally critical financial market infrastructures, Exchange Clearing House and CLS Services, before progressing into senior commercial leadership roles for Deutsche Bank and UBS, where he developed and led some of the most complex and risk-critical third-party relationships, with a particular specialism in the AD&M and PaaS / IaaS space. He worked at enterprise scale, shaping vendor strategy, governing multibillion-pound contracts, and leading negotiations, restructurings and exits, where delivery, resilience and regulatory scrutiny were paramount.
David is the Founder of Wilverley Consultancy and brings more than 25 years’ experience operating at the sharp end of complex commercial decision-making, and a rare blend of buy-side, sell-side and advisory perspectives across technology, outsourcing and large-scale infrastructure arrangements.
At Wilverley, he has continued his work with technology and outsourcing buyers and suppliers, advising on strategic bids, pricing models, margin protection, and long-term client relationships in competitive global markets where TCVs run to nine- and ten-figure levels.
He draws on his dual background to support organisations in situations where experience matters: when the stakes are high, the environment is complex, and commercial judgement, clarity and execution make the difference between value creation and value erosion.
BACKGROUND AND EXPERIENCE
David's career spans senior roles on both sides of large technology transactions, as a buyer advising and leading procurement programmes for major financial services institutions, and as an advisor to technology vendors navigating the commercial complexity of large enterprise deals.
On the buy side, David specialises in Financial Services; banking, insurance, and asset management, where he has managed and advised on technology and BPO sourcing programmes up to and including billion-dollar scale. On the sell side, his experience spans a much wider set of sectors, reflecting a career that has included major global organisations across multiple industries.
- Financial Services · buy and sell side
- Defence and Security · sell side
- Automotive · sell side
- Pharmaceuticals · sell side
- High Technology · sell side
- Global Public Sector · sell side
WHAT WILVERLEY STANDS FOR
Complete independence
No vendor partnerships, panel agreements, or referral arrangements. No conflicts of interest from a parent firm or practice group. Wilverley's only interest is the outcome we help you achieve.
Dual-side perspective
Having spent significant time advising both buyers and vendors on large technology deals, we bring a perspective on commercial dynamics that neither side can develop working in isolation. That perspective is the foundation of everything we do.
Commercial rigour over process
Wilverley engagements are focused on commercial outcomes, not methodology frameworks, certification standards, or process compliance. We care about the result you walk away with, not the documents produced along the way.
Discretion as standard
The matters we advise on are commercially sensitive by nature. Confidentiality is not a feature we offer — it is the baseline on which every client relationship is built. We do not discuss client engagements, and we never will.
Commercial disputes and renegotiations: why legal advice alone is not enough
When a technology contract goes wrong, most organisations reach for lawyers first. That is the right instinct for the legal dimension of the problem. It is rarely sufficient for the commercial one.
Legal advisors work with the contract as written. They assess rights, obligations, and remedies within the four corners of the document. What they cannot always provide is an independent view of the commercial reality behind the dispute: whether the pricing model was structurally flawed from the outset, whether the SLA regime was realistic given what was actually contracted, whether the vendor's behaviour reflects a deliberate commercial strategy or a delivery failure, and what a genuinely sustainable resolution looks like for both parties.
Wilverley provides the commercial layer that legal advice does not cover. We work alongside your legal advisors, not instead of them, to ensure that the commercial argument supporting your legal position is coherent, evidenced, and grounded in how deals of this type actually work in the market.
Where we add value in disputes and renegotiations:
In a renegotiation, we bring independent benchmarking of the current commercial position against the market, a clear view of the vendor's likely priorities and pressure points, and a structured strategy for achieving a resolution that the contract can sustain across its remaining term. A renegotiation conducted without that intelligence tends to produce a revised set of terms that will need to be renegotiated again within two years.
In a dispute, we provide an independent commercial assessment of where value has been lost, how it was lost, and what it would take to recover it, whether through negotiation, structured escalation, or exit. We do not take positions in litigation, but we prepare the commercial case that makes legal action more effective and settlement more likely.
The goal in both situations is the same as in any deal: an outcome that works commercially for both parties for the remainder of the relationship, or a clean exit on the best terms achievable. That requires commercial judgement, not just legal precision.
Working with Aria Grace Law. As a non-lawyer Commercial Partner at Aria Grace Law CIC, David Parsons works alongside leading technology and outsourcing lawyers, offering clients a combined commercial and legal advisory model. The legal and commercial dimensions of a dispute or renegotiation are addressed together rather than in sequence.
HOW WE WORK
Wilverley operates as a principal-led practice supported by a select network of experienced associates. Practitioners with deep sector and functional expertise are brought in on specific engagements when the work requires it.
Every engagement is led and supervised by David Parsons. Associates are deployed under the Wilverley brand and to Wilverley's standards. Clients always know who is doing the work and why they have been chosen for the engagement.
Engagements are structured around the client's needs, fixed-fee projects, monthly retainers, or outcome-based arrangements where our fee is tied to the results we help achieve. We are open about what each model involves and will recommend the one that is genuinely right for the situation.
Principal-led
Every engagement is led by David Parsons. The person you engage is the person who does the work and who is accountable for the outcome.
Associate network
A select network of experienced associates deployed on specific engagements when the programme requires additional resource, under the Wilverley brand and to Wilverley's standards.
Conflict management
We never advise both sides of the same transaction. Conflicts are disclosed proactively, managed systematically, and our policy is published and available in full.
Aria Grace
As a non-lawyer Commercial Partner at Aria Grace Law CIC, David works alongside leading technology and outsourcing lawyers, offering clients a combined commercial and legal advisory model on large technology deals.
Fee structures
Fixed fees, monthly retainers, outcomes-based uplift (buy-side), and win fees (sell-side). We recommend the model that is genuinely right for the situation.
Want to know more?
We are happy to discuss our background, our approach, and our conflict policy in a confidential conversation before any commercial discussion.