Expert M&A advisory and AI strategy for agency founders
We're building long-term asset value for B2B founders through business reinvention and M&A. Supporting founders at every stage of growth - scale, sale and beyond.
Future proofing your biggest asset
Bluhalo is a business for the next decade, focused on supporting B2B organisations across three core pillars: People, Technology, and Asset Growth.
We see the future in high-performing people working with high-performing technology to generate new intellectual property and unlock opportunities within the next technology super-cycle.
Our role is to help founders transform, scale, and realise value by combining strategic insight with practical execution.
Having advised and sold agencies across the globe, we've seen firsthand how people are at the heart of any business. Simply, we bring together exceptional founders and like-minded buyers, with a focus on connecting cultures and opening a new chapter for the people within a business.
The people behind Bluhalo
A global team of agency leaders, M&A advisors, AI specialists, and operational expert partners.
Mark Sainthill
Founding Partner & Head of M&A
An experienced M&A and growth advisor, with a track record of over 30 deals. Specialising in supporting business owners with strategic growth, exit planning, and M&A events.
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Spencer Gallagher
Founding Partner
An ex-agency owner who founded and exited a top UK agency, helping founders achieve their goals through people-first M&A and AI transformation.
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Abbé Wheeler
Head of Business Enablement
15+ years of experience in operational execution. An expert in M&A research, data insights, and marketing execution. Highly focussed on efficiency.
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Tony Lorenz
Managing Partner - USA
An experienced leader in global tech and marketing services across building, scaling, acquisitions and exits. 35+ buy and sell-side transactions globally.
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Tabatha Lane-Fox
Chief of Staff
A highly organised and proactive assistant and operations manager. Expertly manages projects, schedules, communications, and strategic priorities.
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Theresa Carter
Managing Consultant - Talent & Culture
An experienced talent and culture advisor and coach, supporting growth for founders, their businesses and their people.
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Joanne Reid
Consulting Partner - AI Process Mapping
An expert in delivery, project management, and operations helping founders to transform their delivery teams by maximising resource. An expert in AI transformation.
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David Bailey
Managing Consultant - Non Exec CFO
An experienced CFO providing financial expertise and bringing strategic focus and resilience to complex challenges.
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Matt Butterworth
Managing Consultant - UAE
A successful, exited Inc. 500 agency founder, with over 30 years of experience in the design, digital, creative and advertising landscape.
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Ada Lovelace
Head of Engineering & Creative Technology
Equal parts engineer and creative technologist, Ada designs and builds the tools that help agencies unlock new revenue streams, automate workflows, and create proprietary IP.
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Iris Williams
Head of Data, Insights & Research
The analyst behind the advice. Iris surfaces the market data, buyer intelligence, and sector insights that shape every deal and growth strategy Bluhalo delivers.
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Maurice Blake
Chief Marketing Officer
Maurice leads Bluhalo's content and intelligence programme, overseeing the agency's market intelligence feed, analytics, and brand voice across all channels. He thinks in campaigns, not one-off posts, and ties everything back to commercial outcomes for the agencies Bluhalo works with.
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Rory Marsh
Marketing Analytics Manager
Rory tracks and interprets the performance of everything Bluhalo publishes online. He reports weekly on traffic, content performance, and audience growth across the Bluhalo website, giving the team a clear picture of what's resonating with agency founders and where the biggest opportunities lie.
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Oli Speed
Executive Assistant
Oli supports the Bluhalo leadership team with executive and operational coordination, keeping priorities on track, communications flowing, and the day-to-day running smoothly.
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Suzy Henderson
Personal Assistant to Spencer Gallagher
Suzy keeps Spencer sharp and Bluhalo moving. With a background in supporting senior leaders in fast-paced professional services environments, she brings calm, precision, and warmth to everything she does. Behind every well-run day is Suzy.
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Clara Moss
Executive Assistant to Mark Sainthill
Clara provides executive and operational support across Bluhalo's M&A advisory practice, working closely with Mark Sainthill to keep mandates moving and clients well served.
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Sheldon Nazereth
Head of PR and Communications
Sheldon leads PR and communications for Bluhalo and Madbot.agency, managing relationships with journalists, editors, and media across the agency, tech, and business press. He builds the stories that put Bluhalo's thinking in front of the right audiences, from trade press placements to podcast pitches, and maintains the intelligence on who's covering what across global media. When Bluhalo has something worth saying, Sheldon makes sure the right people hear it.
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From building agencies to helping others build theirs.
The Beginning
Founded Bluhalo as a digital agency, growing it into a top-10 UK agency.
The Exit
Successfully sold Bluhalo, learning invaluable lessons about agency M&A.
The Mission
Helped thousands of agencies through our books, courses and consulting transition from traditional to digital.
The Now, Next and Future
New consultancy for a new age, supporting agencies to future proof their now, next, and future in a world of AI.
Our Values
We exist to support founders at every stage of growth - scale, sale and beyond - by going above and beyond to support you behind the scenes.
Straight talking advice
We don't pretend business re-invention, growth or M&A is simple. Our role is to cut through the noise, delivering insights you can act on to handle complexity and build long-term sustainability.
Your success is ours
Working together in partnership. It's simple. We understand, the more successful we make you, the more successful we will become. We've been in your shoes before multiple times.
On a human level
We're people people. Great business is defined by personal relationships and shared memorable experiences. We're in it together. Let's make it an enjoyable one.
We care, deeply
Every interaction is about people not just numbers on a page. Your business represents years of dedication, talent, and grit. We show up with respect for that work.