The clarity to grow.
The discipline to keep.
Willis Advisory helps agencies create clearer visibility, rhythm and ownership around the clients they already have.
For agency founders, MDs and client service leaders who want to protect and grow existing-client revenue.
Client growth rarely breaks because no one cares.
Most agencies care deeply about their clients.
The problem is that existing client growth often gets managed through informal rhythm. A few senior people know what is going on. Client service teams stay busy. Reviews happen. Account plans exist somewhere. The client feels fine, so confidence is assumed.
That can work for a while.
Until the agency grows, the founder gets stretched, the client base becomes harder to read, and the team needs more structure than instinct alone can provide.
Friendly, quiet and paying does not automatically mean confident, loyal or growing.
A QBR is only useful if it creates sharper decisions, better conversations and clear next steps.
The value is not the document. The value is the rhythm and ownership it creates.
In smaller agencies, senior involvement is normal. Hidden dependency is where the risk builds.
Delivery management is not the same as spotting signals, shaping value and owning the next move.
Risk, opportunity and client sentiment may be known somewhere in the business, but not clearly enough to act on.
Existing client growth is a commercial operating rhythm.
Good relationships matter. But good relationships do not automatically create retention, expansion or commercial confidence.
Someone still has to read the signals, understand the account, shape the conversation, prioritise the opportunity and own the follow-through.
That is the gap Willis Advisory helps agencies close.
Good work does not automatically create growth. Someone still has to spot the signal, shape the conversation and own the next move.
Where Willis Advisory helps
The work focuses on the commercial habits around existing client relationships: how they are understood, reviewed, owned and grown.
Client Health Visibility
Understand which relationships are genuinely strong, unclear or exposed before the numbers make the problem obvious.
Existing Client Growth
Identify where growth could realistically come from, what is worth pursuing, and who owns the next move.
Commercial Cadence
Turn reviews, QBRs and account conversations into decision-making moments rather than status updates.
Client Service Confidence
Help client-facing teams move beyond delivery management into stronger commercial stewardship.
Practical support, not consultancy theatre.
The right support depends on where confidence is weakest.
Some agencies need a clearer view of client health. Some need better review cadence. Some need account planning that actually changes behaviour. Others need ongoing senior support around existing client growth.
The aim is not more process.
The aim is better visibility, better conversations and clearer ownership.
Practical ways to work together
The right support depends on where confidence is weakest.
Client Growth Visibility Sprint
A focused diagnostic engagement to understand where client health, growth visibility and ownership are exposed.
Embedded Growth Advisory
Ongoing senior support to help leadership and client teams build a better rhythm around existing client growth.
Account Growth Planning
Move account planning from static documents into practical behaviour, ownership and follow-through.
Client Review Cadence & QBR Design
Make internal reviews and client-facing QBRs more useful, commercial and value-led.
Client Services Commercial Confidence
Support account teams that are strong on delivery but less confident commercially.
Not ready for a conversation yet? Start with the Health Check.
The Existing Client Growth Health Check gives agency leaders a quick diagnostic view of where their current client growth system may be strong, unclear or exposed.
It looks at client health visibility, growth opportunity confidence, review cadence, commercial ownership, account planning behaviour and founder or senior dependency.
It is not a full audit. It is a useful starting point.
How the work typically starts
Step 1: Understand what is happening
We start with the reality inside your agency: where client growth feels unclear, inconsistent or too dependent on a few senior people.
Step 2: Find the weak points
That may be client health visibility, review cadence, account planning, commercial ownership, founder dependency or client service confidence.
Step 3: Shape the right support
The next step depends on the problem. Sometimes that is a focused sprint. Sometimes it is embedded advisory. Sometimes it is a specific piece of work around reviews, planning or team confidence.
Step 4: Create movement
The aim is always practical: better visibility, clearer ownership and more useful commercial conversations.
Where this is useful
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You have meaningful revenue from existing clients.
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Client growth feels too dependent on senior instinct.
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Account plans exist, but do not drive enough action.
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Reviews happen, but do not create enough commercial movement.
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Client service teams are busy, but not always commercially confident.
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You want practical support, not a theoretical transformation programme.
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You only want new business leads. You want generic sales training.
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You want a one-off workshop with no behavioural change.
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You want someone to “fix client services” without leadership involvement.
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You want guaranteed revenue claims dressed up as strategy.
Built from inside agency life.
Willis Advisory is led by Dan Willis, a commercial and client growth leader with more than 15 years’ experience across digital agencies, client services, commercial leadership, customer experience and existing client growth.
He has worked inside agency environments where delivery pressure, client relationships, revenue confidence and senior stakeholder management all meet.
That matters, because this work cannot be theoretical. Agencies do not need another abstract framework that sounds clever and dies in a slide deck. They need practical commercial support that fits the way client relationships actually work.
What agency leaders say
“Dan brought real discipline and rigour to how we approached existing clients, turning what can often be a reactive function into a proactive commercial capability. If you are looking for someone who can bring both strategic thinking and genuine commercial leadership to client growth, and who will do it in a way that brings others along with them, I have no hesitation in recommending Dan.”
“Dan was instrumental in driving growth and success for our clients. His exceptional communication skills, strategic thinking and dedication to client success made him an invaluable asset to our team.”
“Dan came in to clarify how our client services and revenue functions could collaborate better (and he did this extremely quickly). He delivered a clear diagnosis of what to do, priorites in order and concrete steps we could take at once. Dan will help you identify what matters sooner and provide a tangible way to defend and create revenue.”
Want a clearer view of your existing client growth?
If client growth feels too dependent on instinct, scattered conversations or senior memory, a focused conversation can help identify where to start.
You do not need a perfect brief. A few honest details are more useful than a polished enquiry.