For boutique sell-side M&A advisors

Your next deal is going to market.
Find out what buyers will find —
before they do.

When you find it first, it's a preparation task. When they find it first, it's a negotiation.

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Gavin Nathan

Led by Gavin Nathan — formerly UK military, police, central government, private equity. Chairman of Monerys AG, Switzerland. Every engagement principal-led from first call to final delivery.

Principal's Industry Recognition & Media Features
Sunday Times
The Negotiator Awards
Forbes Business Insider MarketWatch

A track record built operating businesses under real commercial conditions — not advising on them from the outside.

You've done this enough times to know exactly how it happens.

The mandate is signed. The seller is engaged. The data room is taking shape. The CIM is being drafted. Everything looks clean from where you're standing.

And then buyers get in.

Not immediately. Not in the first call. But somewhere in week two of diligence — when their advisers have had time to look closely — something surfaces. Something that was always there. Something that could have been found, corrected, or sequenced properly if anyone had looked before the deal went to market.

They didn't. Now you're managing the fallout.

The re-trade conversation. The extended timeline. The buyer who was serious last month and is now using every finding as leverage. The valuation that made sense in March and is being renegotiated in May.

You've had that call. You know what it costs — not just in fees, but in the relationship you spent years building.

And you knew. You felt it.

There was a moment — somewhere between mandate signing and the CIM going out — when something didn't quite sit right. You moved forward anyway. Because that's what the process demands. Because everyone was pointing in the same direction. Because stopping to look harder isn't structurally what anyone in that room is paid to do.

Mandate Signed
Preparation
Integrity Sprint
Market Launch
Buyer Diligence
The gap Nathan's Office fills

Not after the deal goes to market. Not during buyer diligence when the damage is already live. Before. In the window between mandate and market — when identifying a problem still means you control what happens next.

We run an independent five-day integrity assessment on your transaction before buyer engagement begins. We look at exactly what buyer diligence teams look at — financial coherence, data room integrity, operational dependencies, structural clarity, latent risk exposure — and we tell you what they're going to find.

Pass. Conditional. Fail. Plus a prioritised Red-Flag Register and a Remediation Roadmap — so you know what to fix, in what order, and why it matters before a single buyer is engaged.

The Deal Integrity Sprint

Five days. Three outputs.
One clear determination.

Everything buyer diligence will look at — reviewed first, by someone with no stake in the outcome. Three outputs, built for decisions not for filing.

01

Deal Readiness Scorecard

One clear determination. Can this deal withstand investor-grade scrutiny right now? No hedging. No qualifications. A defensible answer you can act on before a single buyer is engaged.

Pass Conditional Fail
02

Red-Flag Register

Every issue that buyer diligence is likely to surface — prioritised by severity, mapped to transaction impact, with the evidence required and next action defined. You see exactly what's coming before it arrives. That changes the entire dynamic of the buyer conversation.

03

Remediation Roadmap

Not just the list — the plan. What to fix, in what order, with what documentation, before the deal goes live. Risk identification that becomes actionable preparation. You go to market prepared. Not hoping.

Who this is built for

Boutique advisors who take
close certainty seriously.

I

You manage $25M–$100M mandates

Where valuation sensitivity is real, diligence is professional, and a late discovery isn't a minor inconvenience — it's a process-threatening event.

II

You've been burned before

You've had the re-trade conversation. You know exactly what it costs. And you'd rather spend five days finding the problem than five months managing the consequences.

III

Your reputation is the business

At boutique scale, one deal that goes wrong mid-process doesn't stay contained. You protect valuation because you protect your name.

5Business Days — Start to Delivery
3Outputs Built for Immediate Use
2–3Engagements per Quarter — By Design
"

"He tells you the truth — whether you like it or not. At the end of the day, that is the only thing that matters."

Walter Schmid

Walter Schmid

CEO & Crisis Communication Coach

Before your next deal goes to market.

Find out what buyers
are going to find —
while you can still do something about it.

Fifteen minutes to determine whether the Integrity Sprint belongs in your preparation process. No pitch. No obligation. Just a direct conversation about your next transaction.

Fixed per-deal fee. White-label delivery as standard. Capacity limited to 2–3 engagements per quarter.

The Deal Integrity & Readiness Sprint

Everything buyer diligence
will look at —
reviewed first.

A structured, independent five-day assessment. Delivered before your deal goes to market. So when buyers engage — there are no surprises you haven't already handled.

Why this exists

The problem with diligence
is the timing.

Professional buyer diligence is thorough, rigorous, and systematically designed to find every weakness in a transaction. That's the point. The problem isn't that it finds things — it's when it finds them.

By the time buyers are in, valuation expectations have been set. Every finding at that stage arrives with leverage attached — because the cost of not closing now falls on the seller's side of the table.

The issue that surfaces in week two of buyer diligence was almost always present at mandate signing. It just wasn't looked for — by anyone with the independence to look clearly.

That is exactly what we do. And we do it first.

Assessment framework

Five domains. The exact areas
buyers look at hardest.

We don't invent a framework. We use the same lens buyer diligence teams apply — because that's the only lens that matters.

01

Financial Integrity Alignment

Revenue recognition, adjustment rationale, working capital, margin sustainability, reporting discipline.

02

Data Room Coherence

Documentation consistency, missing materials, version control. Confusion here kills buyer confidence fast.

03

Operational Dependency

Customer concentration, key person reliance, supplier exposure — the risks buyers use to reprice.

04

Structural & Ownership Clarity

Legal entity alignment, equity clarity, intercompany relationships. Confusion here raises questions you don't want raised.

05

Latent Risk Exposure

Contingent liabilities, historical inconsistencies, compliance exposure — issues that emerge under professional scrutiny.

What you receive

Three outputs. Built for decisions,
not for filing.

01

Deal Readiness Scorecard

One clear determination. No hedging. Defensible rationale. Immediate strategic clarity on whether this deal can withstand investor-grade scrutiny right now.

Pass Conditional Fail
02

Red-Flag Register

Every risk buyer diligence is likely to surface — described, classified by severity, mapped to transaction impact, with evidence required and next action defined. You see everything coming before it arrives.

03

Remediation Roadmap

Not just identification — preparation. Corrective priorities in sequence. Documentation requirements. Narrative adjustments. Risk that becomes readiness. You go to market prepared. Not hoping.

Scorecard determination

Pass

Narrative and documentation aligned. Buyer scrutiny unlikely to destabilise the process.

Conditional

Material risks identified. Manageable with targeted preparation before market launch.

Fail

High probability of re-trade, valuation pressure, or process disruption if marketed now.

The process

Six steps. Five days.
Complete from fit check to delivery.

01
15 minutes

Fit Check

A direct conversation about the transaction — size, timeline, preparation stage. If the sprint is the right fit, we confirm it here. If it isn't — we tell you on this call.

02
Days 1–2

Engagement Confirmation & Data Intake

Scope and fee confirmed in writing before anything begins. We request relevant transaction materials — financial records, draft CIM, data room access, organisational structure. We don't need full diligence readiness. We need enough to assess.

03
Days 3–4

Integrity Assessment

The core of the sprint. We evaluate alignment between transaction narrative, supporting documentation, and underlying reality — across all five domains. Not full diligence. Precisely where professional scrutiny will land hardest.

04
Concurrent

Scoring & Framework Development

Findings synthesised into the decision framework. Readiness classification determined. Issues ranked by severity and transaction impact. Corrective priorities sequenced.

05
Day 5

Delivery

All three outputs delivered. Written for decision-making, not archiving. Short enough to read in full before your next conversation with the seller.

06
Optional — 30–45 minutes

Strategic Review Call

Walk through findings together. Sequencing of corrective actions, positioning considerations, readiness timing. Outputs go directly into execution — not onto a shelf.

What it costs

Fixed. Transparent.
Confirmed before anything begins.

A fixed per-deal fee, confirmed within 24 hours of the fit check call. Typically in the range of a single day's senior legal fees. A fraction of the cost of full diligence — and a fraction of a fraction of the cost of a re-trade.

White-label delivery as standard. Outputs under your firm's brand. Client relationship fully intact.

Co-branded delivery available on request. Nathan's Office attribution where preferred.

Scalable across mandates. Optional preferred partner structure for repeat use.

Your next mandate is preparing for market.

Find out what's there
before buyers do.

Fifteen minutes. Confirm the fit. Protect the deal. If this isn't the right transaction for the sprint — we'll tell you on the call.

Fixed scope. Fixed fee. Confirmed in writing before anything begins.

For boutique M&A and corporate finance advisors.

You've had the re-trade
conversation.
Here's how you
avoid the next one.

Nathan's Office operates as an independent pre-market integrity function — embedded into your preparation process, delivered under your brand, with your client relationship fully intact.

You know the deal better than anyone in the room. You've lived it for months. You understand the business, you've built the narrative, you know the seller and you know the buyer market.

That depth of knowledge is your edge. It's also your blind spot.

The closer you are to a transaction, the harder it is to see it the way a buyer's diligence team will — fresh, systematic, and specifically looking for the gap between representation and reality.

That perspective is not available inside your mandate.

Not because you're not good at what you do. Because you earn when this closes. Because the momentum is real and the timeline is live. Everyone in the room is pointing in the same direction — and that structural pressure means independent scrutiny has no natural home in the process.

Until now.

How white-label delivery works

You engage us. We work inside
your mandate.

Nathan's Office is engaged directly by you — the advisor — not by the end client. We don't speak to the seller directly. We don't access privileged materials outside the scope confirmed with you. We don't touch your mandate or your relationship.

We do one thing: evaluate whether your transaction is prepared to withstand what buyers are going to look at. Then we give you the outputs — under your brand, in a format built for your use.

White-label delivery as standard. All outputs under your firm's brand. Your client sees your work.

Co-branded delivery available on request. Nathan's Office attribution where independent validation should be visible.

You retain full client control. We operate upstream. Everything flows through you.

What changes when you embed this

Six outcomes. Every mandate
that uses the sprint.

I

You control the narrative

Issues addressed before buyer engagement mean you dictate how they're disclosed, positioned, and sequenced. Not buyers.

II

Valuation holds

Buyers cannot re-trade on risks they never discovered. The leverage that drives late-stage price renegotiation simply doesn't materialise.

III

The process stays on schedule

Clean diligence means faster timelines. No reactive problem-solving when buyer scrutiny is at its highest.

IV

Buyer confidence is stronger

Prepared data rooms signal prepared sellers — and credible advisors. Serious buyers move with conviction.

V

Your reputation is protected

You brought independent scrutiny to the preparation. If something surfaces anyway — you found it first. That distinction is everything.

VI

Scalable across your pipeline

Optional preferred partner structure. The sprint integrates as a standard component of your preparation process — not a one-off intervention.

How to introduce it

One sentence is enough.

If you have a mandate preparing for market, the conversation with a colleague or a seller is straightforward:

"We run an independent integrity screen on selected mandates before they go to market. It's delivered in five days. It doesn't slow the process — it protects it."

Reach out directly or forward this page. We handle the fit discussion, scope confirmation, and the sprint. You stay fully across every stage.

Before your next mandate goes to market.

Fifteen minutes to determine
if this belongs in your process.

No pitch. No obligation. A direct conversation about your next transaction.

Fixed scope. Fixed fee. Confirmed before work begins. Capacity limited to 2–3 engagements per quarter.

The Principal

Gavin Nathan

Every engagement at Nathan's Office is led by Gavin from the first call to the final debrief. No associates. No handoff. No exceptions.

Gavin Nathan — Managing Principal

Gavin Nathan

Managing Principal

Gavin Nathan is an award-winning entrepreneur and principal adviser whose work has been featured in Forbes, Business Insider, and MarketWatch. His industry track record includes recognition as Lettings Supplier of the Year (Sunday Times / The Times, 2014) and shortlisting at The Negotiator Awards 2014 — credentials earned operating businesses under real commercial conditions, not advising on them from a distance.

His career did not begin in a boardroom. It began in environments where missing something carried consequences that were never theoretical — UK military, police, and central government. Places where the cost of a blind spot is not measured in fees. It is measured differently. That way of seeing does not leave you.

It carried into private equity, cross-border transactions, and advisory work across Switzerland, the UK, the EU, and the United States. He is currently Chairman of Monerys AG in Switzerland — with direct operational experience across CH/UK regulatory and commercial frameworks where most cross-border transaction risk concentrates.

Across every environment, the pattern was consistent. Transactions don't fail because the people involved are careless. They fail because at the moment scrutiny matters most — when the deal is live, the momentum is real, and everyone in the room has a reason to keep moving — nobody is structurally positioned to look clearly.

Nathan's Office exists for that moment.

Principal's Industry Recognition & Media Features
Sunday Times
The Negotiator Awards
Forbes Business Insider MarketWatch

A track record built operating businesses under real commercial conditions — not advising on them from the outside.

The window before a deal goes to market is the only moment when finding a problem is still entirely in your favour. After that, every finding belongs to whoever found it first.

Gavin built Nathan's Office to work in that window — with the independence that nobody already in the transaction can offer, and the judgment built from environments where being wrong had costs that went beyond the P&L.

Almost nobody is working there. We are.

"

"He tells you the truth — whether you like it or not. At the end of the day, that is the only thing that matters."

Walter Schmid

Walter Schmid

CEO & Crisis Communication Coach

Why this model

Two to three engagements per quarter.
That's the limit. By design.

Full attention is not compatible with volume. Every engagement is led by Gavin from the first conversation to final delivery. No associates. No handoff. No junior team producing outputs that carry someone else's name.

The outputs reflect one person's judgment — formed across two decades of environments where the stakes were real and the consequences of a missed finding were not abstract. That is not scalable. It is also not meant to be.

That constraint is the service.

Before your next mandate.

The conversation
starts here.

Fifteen minutes. No pitch. A direct conversation about your transaction.

Book a Fit Check.

Fifteen minutes.
We determine the fit.
You decide
what happens next.

A direct conversation about your mandate. If the sprint is right for this deal, we'll tell you. If it isn't — we'll tell you that too.

This is not a sales call. There is no pitch. No pressure to proceed.

The fit check is a fifteen-minute conversation with one purpose: determine whether the Integrity Sprint belongs in the preparation process for your next transaction. We've declined mandates that weren't the right fit. We'll tell you clearly if this is one of them.

If it is the right fit — you'll know exactly what happens next before the call ends.

Book a Deal Readiness Fit Check

Choose a time that works for you. Fifteen minutes. No pitch. A direct conversation about your mandate and whether the Integrity Sprint belongs in your preparation process.

All communications are treated in strict confidence. Nathan's Office does not provide legal, tax, or investment advice.

What happens after you book

Three steps to engagement.

01

You pick a time

Choose a slot that works for you directly from the calendar above. You'll receive an immediate confirmation with a meeting link. No waiting. No back and forth.

02

We have the fifteen-minute conversation

Transaction size, preparation stage, timeline, what you're working with. We determine whether the sprint is the right fit for this mandate. If it is, we move immediately to scope confirmation. If it isn't — we'll tell you clearly on the call.

03

Scope and fee confirmed in writing

Fixed scope. Fixed fee. Confirmed before anything begins. No surprises. No ambiguity about what you're getting, when you're getting it, and what it costs.