Agency, Independent
or In-House?
Every comparison you'll find online was written by one of the options. This is the neutral version: UK costs, candid risks, and a framework that maps the choice to your stage.
Research this question and a pattern emerges. Agencies write "why agencies beat in-house". Software companies argue you need neither. The freelance platforms own whatever is left of the page. Every comparison is authored by one of the options being compared, which leaves the actual decision unserved.
We're an agency ourselves, so judge what follows by a simple test: if the framework couldn't plausibly send you to a freelancer or an internal hire, it failed. The question was never "which is best". It's what your programme needs next, and what it can afford as a share of the channel's return.
What Does an Affiliate Manager Do All Day?
Before comparing who should do the job, pin down what the job is. A competent manager's week splits roughly four ways. Partner relations and recruitment take the largest share, around 40%: pipeline, onboarding, newsletters, and the messages that are placement offers in disguise. Commercial work takes about a quarter: assessing placements, negotiating rates and coverage, planning offers. Analysis takes around a fifth: performance, traffic quality, forecasting. Administration fills the remainder: validation, code hygiene, compliance.
Every cost figure below buys some quantity of that work. A cheap option that skips the first two categories isn't cheap. It's decorative.
Option 1: The In-House Hire
Cost (UK, indicative 2026): affiliate managers average around £40k, with entry roles near £30k, senior ones at £55k and above, and London partnerships roles commonly advertised at £50k to £60k. Add 25 to 30% employment overhead plus tools, and a realistic year-one total lands between £50k and £75k.
Strong at: full-time attention on one brand, the deepest product knowledge of any option, relationships that accumulate inside your business, and a seat in every marketing conversation.
Watch for: hiring lag, since eight to fourteen weeks to productive is typical once recruitment is counted. A single point of failure through holidays and notice periods. Scarce senior talent, because an experienced hire costs more than most agency retainers. And the career-path problem: a one-person channel is a hard job to grow in, which is why these roles churn.
Fits when: affiliate is, or is about to become, a top-three revenue channel with five days a week of work in it. In practice that means brands past several million in online revenue.
Option 2: The Independent Expert (and the Fractional Model)
Cost (UK, indicative 2026): experienced freelance marketers average around £418 a day, with affiliate specialists commonly at £250 to £450. Retainer arrangements for small programmes run about £1,200 to £4,000 a month, and standalone audits £1,000 to £4,000. Global marketplaces list far lower rates (Upwork's median sits near $30 an hour) with quality variance to match.
Two words worth knowing. A fractional manager is a senior specialist embedded one to three days a week on an ongoing basis: continuity without the full-time cost. An interim works full-time for a fixed term, usually covering a hire gap. Both models are established and growing in the UK.
Strong at: senior skill without agency overhead, flexible scaling with the season, and often ex-network or ex-agency experience with relationships that are still warm.
Watch for: the bus-factor of one person across capacity, holidays and illness. Relationships that leave when they do. No bench behind them for specialist work such as CSS, creators or international. And check their network relationships are current rather than remembered.
Fits when: £250k to £2m of online revenue, where the programme needs senior strategy one or two days a week rather than five.
Option 3: Agency Management
Cost (UK, indicative 2026): typical retainers of £1,500 to £8,000 or more a month by scope. SME tiers exist from around £1,200. Enterprise and global programmes run to $8,000 to $25,000 and beyond, with performance fees of 5 to 15% of affiliate revenue on top, and setup fees of £1,000 to £4,000 at the larger end. Pricing is rarely public, so normalise every quote to days of senior time per month.
Strong at: a team rather than a person, which buys continuity and specialisms. Pooled publisher relationships and placement deal-flow across a whole client base. Benchmarks from running many programmes at once. And speed: launches and relaunches typically reach cruising pace in four to eight weeks.
Watch for the complaints brands consistently report about our industry, and we include ourselves in the scrutiny: junior-led delivery after a senior pitch, silo working that ignores the wider marketing mix, revenue-chasing that cannibalises other channels, black-box reporting, and the incentive problem when fees are a straight percentage of revenue. Each of those is a provider choice rather than an inevitability, which is exactly why the questions in the previous guide matter more than any logo wall.
Fits when: £250k-plus online revenue with the margin and order value to support it, brands that want the channel moving without building the capability internally, and migrations or relaunches where speed and relationships decide the outcome.
The Hybrid Routes
Most mature programmes end up blended: an internal owner for strategy, brand and cross-channel context, with external specialists for execution, relationships and surge capacity. A related UK model, supported in-housing, has a specialist train and back your own marketer until the stabilisers come off. Both keep knowledge in the building while renting what's scarce.
The Comparison, Side by Side
| Model | Indicative year-1 cost (UK) | Time to productive | Continuity risk | Relationship access | Best-fit stage |
|---|---|---|---|---|---|
| Self-managed | Fees + your time | 2–4 weeks | You are the risk | What you build yourself | Under ~£250k revenue |
| Freelance / fractional | ~£15k–£50k (1–2 days/week) | 2–6 weeks | One person | Their personal network | £250k–£2m |
| Agency | ~£18k–£100k+ (plus any % fee) | 4–8 weeks | Low (team) | Pooled, across clients | £250k–£5m+ |
| In-house hire | ~£50k–£75k loaded | 8–14 weeks incl. hiring | One person | Accumulates internally | ~£5m+ or top-3 channel |
| Hybrid | Sum of parts, tuned | Staged | Lowest | Both | Mature programmes |
Figures are indicative for 2026 and deliberately wide. The shape matters more than the pennies, and the full layer-by-layer detail sits in the UK costs guide.
How to Decide in One Afternoon
Four questions, in order. What does the channel need next: strategy, capacity, or relationships? Strategy points to fractional or agency, capacity to a hire or agency, relationships to an agency or a very well-connected independent. What can it afford? A common rule of thumb keeps total operating cost, management plus fees and excluding commission, inside 10 to 20% of expected channel revenue. What happens if this person or firm disappears tomorrow? And who owns the partner relationships?
That last one has a fixed answer. Whatever you choose, the programme, the network account and the relationships belong to the brand. Nor is the choice permanent: programmes move between models as they grow, and the stages guide maps which model tends to fit which point in the journey.
Quick Answers
Choosing Your Setup
About 40% of the week goes on partner relations and recruitment: finding partners, onboarding, newsletters, answering messages. Around a quarter is commercial work such as assessing placements and negotiating rates and coverage. The rest splits between analysis (performance, traffic quality, forecasting) and administration (validation, offers, compliance). A role or proposal that doesn't resemble that split is missing something.
In the UK, typical retainers run £1,500 to £8,000 or more a month depending on scope, with budget tiers from around £1,200 and enterprise engagements far beyond. Many agencies add a performance fee of 5 to 15% of affiliate revenue, and setup fees of £1,000 to £4,000 appear at the larger end. Pricing is rarely public, so compare quotes on days of senior time per month. Indicative for 2026.
A senior specialist embedded in your business for a fixed slice of the week, typically one to three days, on an ongoing basis. More continuity than project freelancing at a fraction of the cost of a senior hire. An interim is different: full-time for a fixed term, usually covering a gap. Fractional suits programmes that need senior strategy without a five-day week of it.
Map it to stage. Under about £250k of online revenue, neither: stay lean and self-managed. Between £250k and £2m, a fractional specialist or an SME-tier agency, decided by whether flexibility or a team's bench matters more to you. From £2m to £5m, agency or hybrid. Beyond that, most mature programmes land on a hybrid, with an internal owner for strategy and external specialists for execution.