How to Choose a Growth Partner for a Fashion Brand

Most brand owners do not decide to hire an agency. They decide they cannot carry on as they are, and the agency search is what happens next.

Usually it follows a specific trigger. A founder who has been running paid social themselves hits the ceiling of what they can do between everything else. A brand doing £3m realises the freelancer who got them there cannot get them to £8m. Or the current arrangement, three separate specialists on three separate retainers, produces three reports that disagree with each other and with the bank account.

The problem is that the search then gets run backwards. Brands start by looking at agencies, when they should start by deciding which model they need. Those are different questions, and getting the second one wrong is why so many of these relationships end badly inside a year.

Decide the model before you meet anyone

There are four ways to resource growth, and only four. Freelancers and contractors. Multiple specialist agencies, one per channel. One integrated partner across all channels. Or an in-house team.

Each is genuinely right for a certain kind of brand at a certain stage, and each fails in a predictable way. Work out which one fits before you sit through a single pitch, because every agency you meet will tell you the answer is an agency, and every head of ecommerce you interview will tell you the answer is a hire.

The four models, compared honestly

Freelancers are the cheapest way to buy specific execution and the fastest to start. They work well below roughly £1m to £2m of turnover, when the brand needs hands rather than strategy and the founder is still close enough to every decision to provide the direction themselves.

They break at the point where channels start to interact. A freelancer running Meta has no visibility of what email is doing to the same customer, and no mandate to care. You also carry the key-person risk entirely: one person going on holiday, getting ill or taking a full-time role stops that channel dead.

Multiple specialist agencies is the most common setup for brands between £2m and £10m, and the one that produces the most frustration. The logic is sound: buy the best paid social team, the best email team, the best Shopify team.

What actually happens is that each holds a different attribution model, each reports a version of events in which their channel is performing, and the sum of their claimed revenue exceeds what the business took. When performance dips, nobody owns it, because each can point at another channel. We wrote about that accountability vacuum in more detail in why fashion brands are consolidating agencies.

One integrated partner solves the accountability problem by removing the seams. One team, one plan, one number to hold. The trade-off is real and worth stating plainly: no single agency is genuinely best in class at everything, so you are trading peak channel expertise for coherence and a single line of accountability.

That trade is worth making when channels are interfering with each other, and not worth making when one channel is overwhelmingly your business and it needs specialist depth more than it needs coordination.

In-house gives you full control, institutional knowledge that compounds, and a team that thinks about nothing but your brand. It is also the most expensive and the slowest to stand up.

The in-house question, with actual numbers

In-housing is accelerating. Around 32% of brands expect to handle nearly all their creative internally within twelve months, and 82% of large brands already run some form of internal agency. If you are being told that hiring in-house is the mature end state, that is not wrong as a direction of travel.

What is usually missing from that conversation is the crossover point. External support wins on cost, speed and specialisation for most brands below roughly $30m in annual revenue. For the same budget as one year of a five-person in-house team, a brand can fund a full-service agency relationship for three to four years.

The number that should settle the argument, though, is this one: 92% of brands that have built in-house teams still use at least one external agency. And 46% now run a deliberate hybrid, which outperforms both pure models.

In-house is not the opposite of external support. For almost every fashion brand under £30m, the realistic question is not whether to use outside help but what shape it takes and what your own team owns.

The honest version for a brand at £2m to £10m: you probably cannot afford the in-house team you would need, and the version you can afford will be one generalist marketing manager who is expected to be excellent at paid, email, content and Shopify simultaneously. That role does not exist in the wild.

The question that reveals more than any pitch deck

Ask a prospective partner: when this underperforms, how will we know it was you and not the market?

It sounds combative. It is the single most useful question you can ask, because the answer tells you whether they have thought about accountability at all.

A weak answer talks about return on ad spend, reach, engagement, or a dashboard they will build you. A strong answer starts with your numbers, not theirs: contribution margin, blended acquisition cost against a target you agree in advance, repeat purchase rate, full-price sell-through. It will also include a frank account of what they cannot control, because a partner claiming credit for everything will also find a way to disclaim everything.

The follow-up matters just as much. Ask what they would need from you for the plan to work. Anyone who says nothing is either not paying attention or telling you what you want to hear. Every agency relationship that works has obligations running both ways, usually around product supply, stock availability, approval speed and access to data.

Getting this right depends on knowing your own economics first. If you cannot state your contribution margin after returns, no agency can be held to it, and the conversation defaults to platform metrics by necessity. Our piece on why fashion brands lose margin even when sales are growing covers the numbers you need before you start this process.

How the pricing model changes their behaviour

Commercial structure is not an administrative detail. It determines what the agency optimises for when nobody is watching.

Flat retainer is predictable and easy to budget. It also pays the same whether the account grows or stalls, so the incentive is to service the account efficiently rather than to grow it aggressively. Fine for steady-state channels, weak for a growth mandate.

Percentage of ad spend is the most obviously conflicted model in the industry. The agency earns more when you spend more, regardless of what the spend returns. Brands accept it because it is common, and then wonder why every quarterly review recommends a budget increase.

Retainer plus performance aligns the two sides properly, provided the threshold is set honestly. The mechanics matter: commission on revenue above an agreed baseline rewards growth the agency actually created, whereas commission on total revenue pays them for the business you already had.

We should be straightforward here, since it is our own model. Fabrik works on a retainer plus commission on revenue above an agreed threshold. The reason we prefer it is that it fails loudly: if the work is not growing the account, our revenue does not grow either, and that becomes obvious to both sides quickly. The trade-off is that it requires a brand to agree a baseline honestly at the outset, which is a harder conversation than signing a flat fee.

Whatever model you choose, ask what happens in month four, when the initial gains from fixing obvious problems have been banked and the harder work starts. That is when most relationships quietly decline, and the pricing structure determines whether both sides still have a reason to push.

What "fashion experience" should actually mean

Every agency pitching a fashion brand will claim fashion experience. Most of it means they have run ads for a clothing company.

The things that genuinely differ in this category are specific, and you can test for them in ten minutes. Ask how they would handle a size curve going out of balance mid-season, when the sizes that sell are gone and the ones left are dragging the returns rate. Ask what they do with end-of-season stock that has not moved, and whether their answer involves discounting your brand equity away.

Ask how they think about return rates by product, and whether they have ever pulled a bestseller out of prospecting because it came back too often. Ask what they would do differently for a brand with a wholesale book versus a pure DTC brand, since the pricing discipline required is completely different.

An agency that has only ever worked DTC will give thin answers on the last one, and that matters more than it sounds if you sell through stockists. Discount behaviour on your own site is visible to every buyer who stocks you.

The channel ownership question, and why partial mandates fail

One structural point that gets glossed over in most pitches: if an agency is accountable for a channel, it needs to control that channel.

Split arrangements, where an agency runs paid social but the brand controls the creative, or runs email but not the segmentation, produce a relationship where neither side can be held to an outcome. Every review becomes a discussion about whose half caused the result.

This is a live question for brands moving from multiple specialists to one partner, because the natural instinct is to keep one channel with the incumbent who is performing. Sometimes that is the right call. But be clear that you have then chosen a hybrid, with the coordination costs that come with it, rather than the single accountability you were trying to buy.

Red flags worth taking seriously

A pitch built entirely on case studies from other categories. Direct-to-consumer supplements and fashion look similar in a deck and behave nothing alike in practice, mostly because of returns and seasonality.

Results presented as return on ad spend with no reference to margin. A 4x return on a category returning at 35% is not a 4x.

The senior people in the room who will not be on the account. Ask directly who does the day-to-day work, how many other accounts they carry, and whether you will meet them before signing.

No questions about your stock position, lead times or cash cycle. An agency that plans a growth curve without asking what you can actually manufacture and hold is planning in a vacuum.

And an unwillingness to say what they are not good at. Every agency has gaps. The ones worth hiring will tell you where theirs are.

Making the decision

Run the process in this order. Establish your own numbers first, so you can hold anyone to them. Decide the model, using turnover and channel complexity rather than ambition. Then meet three partners, not eight, and give each the same brief and the same data so the responses are comparable.

Weight the answers on accountability and commercial structure more heavily than the creative work in the deck. Creative quality is easy to assess and easy to change. A relationship with no clear line of accountability cannot be fixed later, because the problem is structural rather than a matter of effort.

The brands that get the most out of these relationships are rarely the ones that picked the most impressive pitch. They are the ones that knew what they were buying, agreed how it would be judged, and gave the partner enough control to be genuinely responsible for the result.