Case studies

How a full-service agency grew retained client revenue 166%


A nine-person full-service agency in Leeds was living pitch to pitch, pouring its best effort into winning new clients while the ones it already had drifted. I ran a full review of the business, then worked with the team to rebuild it around the clients already paying them. Retained client revenue rose 166% and project efficiency rose 230%, and retention became the agency's main source of revenue rather than a bonus on top of new business.

What was the problem?

The agency was good at winning work and it showed, because winning work was where all the energy went. New business got the senior people, the polish and the late nights. Existing clients got what was left.

That is a common shape for an agency, and it is an expensive one. Every month starts at zero, the cost of sale never falls, and the clients who already trust you, the cheapest revenue an agency will ever earn, quietly slip away to someone who seems keener.

The owners could feel the treadmill even if the numbers had not yet forced the issue.

What did I do?

I ran a full review of the business, the same way I always do: workshops and one-to-one interviews across the team, then a proper look at the evidence. Systems, processes, projects, reporting, proposals, financials and the communication between them all, examined against what actually happened on recent work rather than what the process documents claimed.

That produced a prioritised action plan rather than a long list, because an agency in full flight can only change a few things at a time.

The heart of the plan was a shift in where the effort went. Existing clients became accounts to be developed rather than projects to be finished, with a deliberate rhythm of reviewing what each client would need next and selling to people who already knew the work was good.

Alongside that the team tightened how projects ran, so delivery stopped burning the hours that account development needed. I stayed close to the team while they put the plan into practice, which is where reviews either become results or become shelfware.

What was the result?

Retained client revenue rose 166% and project efficiency rose 230%. Client retention became the primary source of revenue rather than a bonus on top of new business, and the efficiency gain is what freed the capacity to serve existing clients properly in the first place.

Nine people, so the efficiency gain is not a rounding error on a large payroll: it is a third of a working week back across the team. The agency stays anonymous here, and the period behind those figures sat inside its own management accounts, so both numbers are as the agency reported them. The shape of the change was plain enough: from a business that had to win every month to one that started each month with most of its revenue already in the room.

What does this show?

Agencies are built to chase, so they chase, and the clients they already have become the most neglected asset on the books. The fix is not a loyalty scheme. It is running delivery well enough that clients want to stay, and then taking existing accounts as seriously as new logos. Do that and the treadmill slows down on its own.


The review behind this is get-gain-grow. On where else an agency's money leaks, see the hidden cost in your agency's pitch process.

Questions people ask

Why not just win more new clients instead?

Because the arithmetic favours the clients you already have. There is no pitch cost, no ramp-up and nobody to convince, so retained revenue is the cheapest an agency will ever earn. New business still matters; it just should not absorb every senior hour while existing accounts drift.

What actually changed day to day?

Existing clients became accounts to be developed rather than projects to be finished, with a deliberate rhythm of reviewing what each client would need next. Alongside that the delivery process was tightened, which is what freed the hours account development needed.

What does a review like this cost?

It is the get-gain-grow review, scoped and fixed before it starts, from £5,000. The fee covers the workshops, the interviews, the evidence pass, the written report and the prioritised plan.


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