The signs it is time.
Three patterns show up again and again. Link deliverables slipping while the rest of the retainer runs on time, because outreach is nobody's whole job. Proposals going out without link building in them, because the team cannot fulfil what sales could sell. And quality wobbling month to month, because placements depend on whoever had spare hours.
Any one of these means fulfilment is constraining revenue. All three together usually mean the agency has been quietly under-selling its own service line for a year or more.
The maths of hiring versus outsourcing.
Link building done properly is prospecting, pitching, writing and QA. One hire rarely covers all four well, and the tooling and management time land on top of the salary before the first placement exists. The function only gets efficient at a volume most agencies do not have on their own.
When you outsource SEO fulfilment on per-link pricing, the cost scales with the work sold: links earned through outreach and placed inside articles on real publications and news sites. Our rates run from £325 to £400 per link by volume, and our recommended retail guidance is £700 per link at five links a month, £550 at ten and £500 at twenty. Sold at that guidance, an agency keeps roughly £1,500 a month at five links, £2,000 at ten and £3,500 at twenty, with no payroll commitment behind it.
When keeping it in house is right.
If link building is the thing your agency is known for, and you have the volume to keep a dedicated team busy every week, build the team. Owning your core differentiator is worth the overhead, and an outside provider should tell you so plainly.
The in-between position also works: some agencies keep their flagship campaigns in house and outsource SEO fulfilment for the steady retainer work underneath. The process holds either way, because each client campaign runs in its own file with its own brief.
The risks, stated plainly.
Four things can genuinely go wrong. Quality drift, where month three looks worse than month one. Confidentiality failure, where a client discovers the work is outsourced from the provider's own marketing or a careless email. Dependency, where the agency cannot leave because the provider holds the knowledge. And reputational damage, where bad placements sit on the client's profile long after the provider is gone.
Pretending these risks do not exist is how providers lose agencies. Managing them is a matter of controls, not luck.
The controls that manage them.
Quality drift is controlled by a written standard checked on every link, not a vibe. Ours is the quality control checklist, and you can spot-check any placement against it. Confidentiality is controlled by mechanics: NDA, no client contact, unbranded reports, no agency names published anywhere.
Dependency is controlled by keeping the client relationship and the strategy with you; we hold campaign files, not your clients. And reputational risk is controlled at the sourcing screen, because the cheapest time to reject a bad link is before outreach starts.
Test it for the price of three links.
The decision does not need a leap. A pilot month puts one real client brief through the whole process: three links, £400 each, one invoice, no commitment. You see the prospect quality, the communication rhythm, the placements and the report before any ongoing arrangement exists.
If the pilot convinces you, volume moves onto the rate card. If it does not, you have lost nothing but a month and learned exactly what to demand from the next provider.