Is a bigger agency safer than an independent?

Partly. A bigger agency is safer against one particular risk: the work stopping because one person is ill, on holiday or has left. It can also do more at once. But it isn't safer on everything. People leave bigger agencies too, you may not get the person who pitched, and the protections that matter most, insurance and data protection, come down to the supplier and the contract rather than the headcount.

Our interest, stated first. We're an independent agency ourselves, so we have an interest in the answer.

This is part of our series marketing myths, checked, which tests what small and medium businesses are told against what the regulators, the data and the people who run the systems actually publish.

What actually differs

Cover when someone is ill, on holiday or leaves

This is the clearest difference, and it favours the bigger agency.

Everyone is away sometimes. Almost all workers are entitled to "5.6 weeks' paid holiday a year", as GOV.UK's guide to holiday entitlement puts it, and the Office for National Statistics estimates that the average worker lost 4.4 days to sickness or injury in 2025, in figures it still classes as official statistics in development. Put together, that's around six and a half weeks a year when any one person isn't working, assuming they take their holiday.

In a bigger agency, someone else can usually pick up the work during those weeks. With a smaller supplier the work may wait, unless there's an arrangement for someone else to cover it. For a website build, that's an inconvenience. For an ad account spending thousands a week, or a launch with a fixed date, it can be expensive.

Continuity of people

Here the bigger agency's advantage is smaller than it looks, because cover isn't the same as continuity. A bigger agency can replace a person, but people leave it too. The Institute of Practitioners in Advertising (IPA) surveys its member agencies every year, and its Agency Census 2025, published on 11 February 2026, reported that across them "Overall turnover rose to 24.8%" in the twelve months to 1 September 2025, and that "Overall staff retention declined to 68.6%". Its members are advertising, media and creative agencies rather than the smaller firms most small and medium businesses hire, so treat the figure as an indication, not a measure of every agency. Even so, the person who knows your account in January may not be there in December.

A smaller independent often offers the opposite trade: more continuity in who does your work, and less cover when that person is unavailable. Which one you actually get depends on the supplier rather than the label, so ask.

Capacity

A bigger agency can run several things at once, such as search ads, social ads, content and design in the same month, with more people to absorb a busy period. An independent can only do so much, and should tell you how many clients it works with at once. If you need a lot produced every month across several channels, that's a real reason to go bigger.

Range of specialists

A bigger agency usually has more specialists in-house. An independent covers fewer disciplines itself and brings in others for the rest. Neither is wrong, but with an independent you should ask who else will work on your account, and whether they're covered by the same contract.

Insurance

This is where size tells you least. Employers must have employers' liability insurance "to cover you for at least £5 million" as soon as they take someone on, as GOV.UK's guide to employers' liability insurance explains, so a bigger agency will have it. But that insurance pays compensation if an employee is injured or made ill by their work. It doesn't cover you.

What covers a client's loss from negligent work is professional indemnity insurance. Some professions, healthcare among them, have to hold it by law. We found no law and no regulator requiring a marketing agency to hold any, so whether your supplier has it, and for how much, is worth asking whatever its size.

Data protection

Size makes no difference to the law here either. If a supplier handles personal data for you, such as customer lists, form submissions or analytics, the same rules apply whether it's one person or a hundred. The law, as the ICO sets it out, says you may only use a supplier that can show it will handle your data properly, and having the resources to do so is part of that test. That makes it a fair question to put to a small supplier, and an equally fair one to put to a large supplier about who will actually be handling your data.

Account management

A bigger agency usually puts an account manager between you and the people doing the work, with processes and reporting built around that. With an independent, you usually talk to the person doing the work. We found no evidence that either produces better results, so it comes down to which you'd rather have. It's the same trade-off that runs through choosing an independent, founder-led agency, or choosing between an agency or freelance marketer.

Cost structure

A bigger agency's price has to cover more people and more overhead: account management, premises, winning new business, and the time of everyone between you and the work. An independent's price covers fewer of those. That doesn't make an independent cheaper for the same result, and we found no reliable public data comparing agency prices or outcomes by size. Compare what each will do, who will do it and the total cost, not the day rate.

When a bigger agency is the right choice

Be honest about which of these apply to you. If any one does, a bigger agency is likely the safer choice, and we'd say so to a client.

• You need several disciplines running at the same time, every month, such as paid search, paid social, content and design, at a volume one person couldn't produce.
• The work can't pause. Large ad budgets where a week unmanaged would cost real money, campaigns that need watching seven days a week, or launches and seasonal peaks with fixed dates.
• Your procurement rules require it. If your organisation insists on minimum insurance levels, security certifications, audited accounts or a financial standing that a small supplier may not have, a bigger agency may be the only kind that qualifies.
• Nobody on your side can coordinate. If you'd otherwise hire several specialists and have no one with time to brief and manage them, one agency coordinating the work is worth paying for.
• You need cover outside working hours, or across several markets and languages.

When an independent is fine, or better

• The work can be described as a project, with a start, an end and a defined result.
• You want senior judgement on your account, from the person you met.
• A pause of a week or two while someone is away wouldn't cost you much.
• The supplier can tell you exactly what happens if they're unavailable.

What to ask either

The same questions protect you whatever the size of the supplier, and they're the heart of our longer list of questions to ask a marketing agency. They apply to us too, so ask us every one.

• Who will do the work, and will I meet them before I sign?
• What happens when that person is ill, on holiday or leaves?
• How many clients do you work with at once?
• Do you hold professional indemnity insurance, at what limit, and can I see the certificate?
• Will you sign a data processing agreement, and who will handle our data?
• Who else works on our account, and are they covered by this contract?
• Is every account, file and login in our name, so there's no doubt about who owns our marketing accounts?
• What's the notice period, and what do we get at handover?

What nobody has measured

Some of this can't be settled from published data. We found nothing comparing results for clients of small and large agencies. The IPA's turnover figures cover its own members, which are advertising, media and creative agencies, and we found no equivalent for smaller agencies or independents. We found no official data on how often marketing agencies of different sizes close, so we make no claim about which is more likely to stop trading. And although we found no law or regulator requiring a marketing agency to hold professional indemnity insurance, we can't rule out that one applies to a particular specialism.

So a bigger agency buys you cover and capacity, and if the work can't pause or you need several disciplines at once, that's worth paying for. On everything else, ask both kinds the same questions and choose on the answers. If you'd like help working out what kind of support you need before you choose anyone, our 90-day marketing plan gives you a budget split channel by channel and a plan with the jobs in order, for a fixed £2,500.