The in house vs agency marketing question used to be about cost. In 2026 it is mostly about speed and volume. Brands need far more video than they did three years ago, across YouTube, Shorts, Reels and TikTok, and they need it every week. So who should make it: people on your payroll, an outside partner, or a mix of both?
The data says almost nobody picks one side: most large brands run an in house team and still pay agencies. The skill is deciding which work goes where. One disclosure up front: we are an agency, so we have tried to be fair to both options and to show our sources.
The short version
- Hybrid is the norm. In the WFA survey 83% use a full in house resource, but 28% also embed external agencies and 24% use a freelancer pool.
- In housing often underdelivers on speed. In ISBA’s UK study 93% expected more speed, but only 40% experienced it.
- People cost more than salary. Employer National Insurance is 15% above £5,000 a year, plus pension, holiday and a median £2,000 to recruit.
- Keep always on content close. Frequent, brand fluent work such as Shorts, community posts and channel management suits an in house team.
- Rent the rare skills. Strategy, hero films, specialist production and AI expertise are where outside partners usually earn their fee.
What is the difference between in house and agency marketing?
An in house team is made up of people you employ directly to plan and make your marketing. Some large brands formalise this as an in house agency: a dedicated creative unit that works like an agency but sits inside the business. Sainsbury’s runs one called Zest, and Specsavers has made its own creative in house since 1988, with about 90 people by March 2020 according to Creative Review.
An agency is an outside business you hire on a project or retainer basis, buying its people and experience across many clients without hiring anyone. A hybrid model mixes the two: an in house core that owns the brand and everyday output, with partners for strategy, big productions or specialist skills.
In house vs agency marketing: the honest trade offs
Neither option is better in general. Each is better at certain jobs. This is how we see the trade offs for YouTube and social video.
| Factor | In house team | Agency | Hybrid |
|---|---|---|---|
| Cost structure | Fixed salaries and on costs, cheaper per asset at high volume | Variable fees, easier to start and stop | Fixed core plus flexible project spend |
| Speed on everyday content | Fast once the team is set up | Slower if every request needs a brief | Fast for always on, planned for hero work |
| Brand knowledge | Deep and builds over time | Has to be learned and refreshed | Owned inside, shared with partners |
| Creative range | Can narrow over time | Wide, fed by many clients | Fresh ideas from outside, delivery inside |
| Specialist skills | Hard to justify a full time hire | Shared across clients | Hire the core, rent the rare skills |
| Scale up or down | Slow, tied to hiring | Quick | Partners absorb the peaks |
| Data and channel access | Stays with you | Must be set up carefully | You own accounts, partners get access |
Advertain guidance based on the sources in this article. Weigh each factor against your own volume and goals.
Why brands bring work in house
When the World Federation of Advertisers and The Observatory International asked 45 multinationals, with about $60bn of combined ad spend, why they built in house agencies, cost came first. Speed and agility came a close second.
Main reasons multinationals give for in housing
The same survey shows the trend has momentum. 66% of those multinationals already have an in house agency and another 21% are considering one. Only 37% buy some social media in house today, but 83% expect to within three years. In the UK, an Industry Club survey reported by LBB in December 2024 found that almost half (48%) of about 50 brands had grown their in house headcount in the previous 12 months.
Volume is a big part of the pressure. In Adobe research published in June 2025, 71% of marketers expected demand for content to grow more than five times by 2027, and 62% said audiences expect new content weekly or more often (Adobe sells content tools, so treat this as vendor research). Budgets are moving in the same direction. Gartner’s 2026 CMO Spend Survey of 401 marketing leaders found:
“Labor’s share of the total marketing budget rose from 21.9% in 2025 to 24.5% in 2026.” Gartner, 2026 CMO Spend Survey
Does in housing actually deliver?
Often, but not always as promised. The most useful UK evidence comes from ISBA’s State of In housing study, published in February 2023, which compared what senior marketers expected from in housing with what they actually got.
UK in housing: expected benefit vs experienced benefit
The speed gap is the one to plan for. An in house team is only fast with clear priorities, enough people and quick sign off; without those, work queues up just as it would at an agency. Satisfaction is still high, though: 86% of the WFA sample were satisfied with their in house agency. Note that in house teams in that survey were judged mainly on outputs (quality of work 67%, speed to market 47%, cost savings 40%) rather than on business outcomes, which is worth fixing whichever model you choose.
How much does an in house team really cost?
Salary is only the starting point. In the UK you also pay employer National Insurance, pension contributions and holiday, plus the cost of finding the person in the first place. These are the official and benchmark figures we used.
| Cost | Figure | Source |
|---|---|---|
| Employer National Insurance | 15% on earnings above £5,000 a year | GOV.UK, 2026 to 2027 rates |
| Employment Allowance (eligible employers) | Up to £10,500 off the annual NI bill | GOV.UK |
| Workplace pension | Employer minimum 3% of qualifying earnings (£6,240 to £50,270) | GOV.UK |
| Paid holiday | 5.6 weeks a year (28 days for five days a week) | GOV.UK |
| Recruitment | Median £2,000 per hire, £3,500 for senior roles | CIPD, 2026 |
| Social media manager salary | £25,000 starter to £50,000 experienced | National Careers Service |
| Video editor salary, London | Average £30,000, range £25,000 to £43,000 | Payscale, small sample |
Figures checked on 20 October 2026. Salaries vary widely by location and seniority.
Here is a simple illustrative example for one social media manager on £37,500, the midpoint of the National Careers Service range. Employer National Insurance is 15% of £32,500 (the salary above £5,000), which is £4,875. The minimum employer pension is 3% of £31,260 in qualifying earnings, about £938. That takes the yearly cost to about £43,313 before recruitment (a median £2,000), equipment, software, training and management time. One person rarely covers shooting, editing, thumbnails, scripts and reporting, so the real comparison is usually a small team against a retainer. For a full breakdown of production costs, see our video production cost guide.
Why most brands end up with a hybrid model
The data points clearly to a mix. In the WFA survey, 83% of brands use full in house resource, but 28% also have external agencies embedded with them and 24% use a pool of freelancers. In ISBA’s UK study, 73% already had in house content production. Yet Forrester found that 93% of companies still use agencies in some form, even as fewer expect agency budgets to rise (28%, down from 41% in its previous survey).
The big UK names show the same pattern. Marketing Week reported in February 2024 that Sainsbury’s was hiring more than 30 roles for its in house agency to make creative work more efficient, while an outside agency still made its Christmas advert. Specsavers describes its own set up as a hybrid that keeps external partners where they add efficiency. Unilever’s in house AI studio now produces “hundreds” of assets per beauty campaign where it used to make about 20, according to Glossy, but Unilever still works with large agency groups.
AI is pushing in both directions. It lets small in house teams make more versions, but skills are scarce: in Gartner’s 2026 survey, 38% of CMOs named a lack of internal AI expertise as the top barrier to AI efficiency, and in a WFA report from November 2025, 65% of participants had a creative in house agency but only 12% were fully integrating AI. We cover the wider picture in our report on AI in marketing.
How to decide between in house and agency marketing in 7 steps
Use these steps to decide which work to keep, which to hire out and how to make the two work together.
Step 1: Audit the volume and formats you need
Count every format you need in a typical month: long form videos, Shorts, Reels, TikToks, thumbnails and paid cut downs. Volume is the biggest driver of whether a salaried team pays for itself. Our guide to how often to post on YouTube can help you set a realistic cadence.
Step 2: Split always on work from hero work
Always on work is frequent, repeatable and needs deep brand knowledge, which suits an in house team. Hero work, such as a flagship series, a launch film or a channel relaunch, happens less often and needs specialist craft and fresh thinking. That usually suits a partner.
Step 3: Cost both options honestly
For the in house side, add salary, 15% employer National Insurance above £5,000, pension, recruitment, kit, software and management time. For the agency side, ask for a fee that covers the same output and the same reporting. Compare cost per finished asset and cost per month, not day rate against salary.
Step 4: Map the skills gaps
Check who can do strategy, scripting, shooting, editing, motion, thumbnails, analytics and paid amplification. Any skill you need less than two or three days a week is usually cheaper to rent than to hire. AI skills deserve their own line given how scarce they are.
Step 5: Decide who owns what
Keep the brand, the channel accounts, the data and the final sign off inside the business. Give partners access, not ownership. If you are starting from scratch, our guide to starting a YouTube channel for business covers access roles.
Step 6: Pilot for 90 days
Test the new set up on a slice of work before committing to hires or a long retainer, with success measures agreed in advance.
Step 7: Judge on outcomes, not just outputs
Measure both teams on the same business results, not just assets shipped, and review the split every six months.
Which model fits your situation?
| Your situation | Usual best fit | Why |
|---|---|---|
| Starting YouTube from zero, small budget | Agency or consultant to set up, then build in house | You buy the playbook once instead of learning by trial and error |
| Posting several times a week across platforms | In house core plus freelancers for peaks | High volume makes salaried roles cost effective |
| One or two big campaigns a year | Agency | No need to carry full time production staff all year |
| Regulated or sensitive category | In house sign off with specialist partners | Approvals and compliance stay close to the business |
| Strong team but flat results | Hybrid with an outside strategy partner | Fresh eyes on format, packaging and data |
Advertain guidance. Every brand is different, so treat these as starting points.
To give one example from our own work, the Formula E content we produced reached more than 7 million views across YouTube, Instagram and TikTok, and we helped Paul Ribot grow from 0 to 30,000 subscribers in 75 days. Results like these come from strategy and packaging as much as production. If you do hire a partner, use our list of questions to ask a social media agency, and you can see more of our work here.
In house vs agency checklist
- You know how many assets you need each month, by format.
- You have split always on work from hero work.
- Your in house costing includes National Insurance, pension, holiday, recruitment, kit and software.
- Agency quotes cover the same output and reporting as your in house plan.
- Every skill gap has an owner, a freelancer or a partner.
- Channel accounts, data and final sign off stay with your business.
- You have agreed a 90 day pilot with clear success measures.
- Both teams are judged on the same business outcomes.
Frequently asked questions
Is it cheaper to have an in house marketing team?
At high, steady volume it often is, because busy salaried staff cost less per asset. At low or uneven volume an agency is often cheaper, because you are not paying salary and on costs for people who are not fully used. In ISBA’s UK study, 93% expected in housing to cut costs but 60% said it did.
What is an in house agency?
An in house agency is a creative or marketing team employed by a brand that works like an agency but serves only that brand. In the WFA’s 2023 survey, 66% of major multinationals had one. Well known UK examples include Sainsbury’s Zest and Specsavers’ in house creative team.
Are marketing agencies worth it?
They are when they bring skills or capacity you cannot justify hiring full time, and are judged on outcomes. Forrester found 93% of companies still use agencies in some form.
Can you use an agency and an in house team together?
Yes, and most large brands do: an in house team for always on content and brand ownership, with agencies for strategy, hero productions and specialist skills. The key is a clear split of responsibilities, shared goals and one owner for accounts and data.
Want help deciding the right split for your brand? Talk to us.
