The real cost comparison
A mid-to-senior product designer in London costs £70,000–£95,000 in salary. Add employer NI, pension, equipment, software and recruitment fees and the fully loaded first-year cost is realistically £95,000–£130,000. If you use a recruiter, add another 15–20% of salary on top.
A full brand identity from a specialist studio is £15,000–£40,000, delivered in six to ten weeks. A studio retainer for ongoing work runs £3,000–£12,000 per month.
Those numbers are not comparable, because they buy different things. The hire buys continuous capacity and accumulated product context. The studio buys concentrated senior expertise for a defined outcome. A company that needs an identity system does not need a full-time designer to get one; a company shipping product weekly cannot outsource its way out of needing design capacity.
What each is actually good at
A studio is good at things that are deep, occasional and benefit from outside perspective. Brand identity. Positioning. A website. A launch. Work where the cost of being wrong is high, where you want senior people concentrated on it for a fixed period, and where someone who has done it thirty times will get to a better answer faster than someone doing it for the first time. Studios are also, usefully, able to say things internally nobody feels safe saying.
An in-house designer is good at things that are continuous, contextual and iterative. Product design. Weekly shipping. Design system maintenance. The hundred small decisions that require knowing what the engineering team decided in March and why. No studio will ever hold that context, and paying one to try is expensive and slow.
The failure mode in each direction is predictable. Hire a generalist designer and ask them to produce a brand identity in their first quarter, and you will get something competent and safe, produced by someone who has never done it before, while the product design work they were hired for goes undone. Engage a studio on a retainer to do continuous product design, and you will pay agency rates for context they have to rebuild every sprint.
The sequencing most teams get wrong
The common order is: hire the designer first, then engage a studio eighteen months later when the brand has become an obvious problem. This is backwards, and it is expensive twice over.
The better order is: get the brand and positioning settled first, then hire. It costs less, it happens faster, and it makes the hire dramatically more likely to succeed. A designer joining a company with a settled identity, a working system and a clear position can ship from week two. A designer joining a company with none of those things spends their first six months doing foundational work alone, unsupported, usually while also being asked to produce weekly marketing assets, which is how good designers end up leaving inside a year.
A settled brand also makes the hire easier to make. The best candidates ask what the design function is for. “We have a system and a position, and we need someone to build the product on top of it” is a far more attractive answer than “we need you to figure all of that out.”
The combination that works
For most Series A technology companies the right shape is: a studio engagement to establish brand, positioning and the systems, then a first design hire who owns and extends it, with the studio available for the occasional deep piece: a launch, a campaign, a new sub-brand, that would otherwise consume the in-house team for a quarter.
That model gives you senior expertise where it compounds and continuous capacity where it is needed daily, and it does not ask one person to be both. It also gives your first designer something increasingly rare: a job where the foundations already exist and their work is to build, not to excavate.