Compare
Agency vs
in-house.
The honest version, for a UK service business. No thumb on the scale — including where in-house genuinely wins.
| Agency | In-house | |
|---|---|---|
| Upfront cost | Monthly fee, no employment overhead. Cancellable if terms are fair. | Salary + NI + pension + tools + management time. A real marketer is £35k–£55k+ all-in. |
| Time to results | Fast — a good one is live in weeks and brings existing playbooks. | Slow — hiring takes months, then ramp-up before output is reliable. |
| Range of skills | Broad — ads, site, automation, search under one roof (if it's a real operator, not account managers). | Narrow — one hire is one skill set. Full coverage means several salaries. |
| Focus on your business | Split across clients — the risk is being one of many. | Total — they think about nothing else. The upside of in-house. |
| Control | Indirect — you brief and review. | Direct — they're in the building, on your priorities. |
| Key risk | Layers between you and the work; activity reported as if it were outcomes. | Single point of failure; capability ceiling of one person. |
When an agency wins
- → You need results in weeks, not after a 3-month hire-and-ramp.
- → You want range — ads, site, automation, search — without several salaries.
- → You can't keep a full-time marketer busy with work they're great at.
- → You'd rather pay for outcomes than manage a person.
When in-house wins
- → You have the volume to keep a specialist fully occupied.
- → You want total focus and direct, daily control.
- → The work needs deep inside-the-business knowledge to do well.
- → You already have someone senior who can direct them.
Where WaveSignal fits.
We're built for the case where the agency model wins but the usual agency baggage doesn't appeal: a senior solo operator running modern tools, rather than a layer of account managers. One person scopes, builds and runs the work, and the whole chain — ads, follow-up, the site underneath, search — is treated as one system.
If you've got the volume and the senior direction to justify a focused in-house team, build it — we'll say so on the call. If you want range and speed without the headcount, that's exactly what we do. Either way, the pricing is public and cancellable, and you can read the full story of how the one-operator model works.
FAQ
Should I hire a marketing agency or build in-house?
For most UK service businesses below a certain size, an agency wins on time-to-results and breadth of skill for the money — a single in-house hire is one skill set plus a full salary and management overhead, and takes months to ramp. In-house starts to win once you have enough volume to keep a specialist fully occupied and want total focus and control. The honest deciding factors are your stage, your monthly budget, and whether you can keep a full-time marketer busy with work they're actually good at.
Is an agency cheaper than an in-house marketer?
Usually, once you count everything. A competent in-house marketer is £35k–£55k+ all-in (salary, NI, pension, tools, and the management time to direct them), and they cover one discipline. An agency retainer buys a range of capability — ads, site, automation, search — with no employment overhead and no notice period beyond the contract terms. The crossover point comes when your volume justifies a full-time salary on a single channel.
What's the hidden cost of hiring in-house?
Management time and capability ceiling. A junior or generalist hire needs direction, and that direction has to come from someone who already knows marketing — which most service business owners don't have time to be. And one person can only be excellent at one or two things, so the gaps get filled with mediocre work or more hires.
When does a hybrid model make sense?
Often. A common, effective setup is an agency that builds and runs the acquisition system while an in-house coordinator owns the day-to-day relationship, the brand, and the things that genuinely need to live inside the business. You get the agency's range and speed plus internal focus, without paying for a full specialist team.
Not sure which fits?
Book a 30-minute call. We'll give you a straight answer on agency, in-house, or hybrid for your stage — even if the answer isn't us.