I don't trust marketing agencies, and neither should you (at first)
You check a plasterer's work by running your hand over the wall. You check a sparky's by looking at the board. You cannot check a marketing agency's work at all, not for months, and by then you have paid them a few grand. That asymmetry is why your instinct not to trust them is right. The argument here is about what should change your mind.
The problem is not that agencies are crooks
Most are not. The problem is structural. In every other trade you hire, you can see the result before you pay the balance. The kitchen is fitted or it is not. With marketing, the result is a change in how many strangers ring you over the next six months, and that number is affected by the weather, the economy, your competitors and whether you answered the phone. The agency can take credit for the good months and blame the bad ones on everything else.
So you are being asked to pay for something you cannot inspect, from someone who benefits if you cannot tell whether it worked. Distrust is not cynicism there. It is the same caution you would want a customer to show towards a tradesman they had never heard of.
The industry has earned it
Ask around any trade WhatsApp group and the stories come out. The twelve-month contract for a site that never ranked. The 'pay monthly website' that vanished the day the payments stopped. The Google Ads account where nobody could say how much of the £600 a month actually reached Google. The cold caller who had 'noticed problems with your listing'.
None of these are rare. We have listed the warning signs in our guide to spotting a cowboy marketing agency, and the fact that a twelve-item list was easy to write tells you how common the patterns are.
Why 'at first' is in the title
Permanent distrust is as lazy as blind trust. It leaves you doing everything yourself forever, and some of this work is genuinely done better by someone who does it all day. The question is what should move an agency from 'unknown' to 'worth a go'. There are three things, and they are all things the agency can control.
Not promises. Not testimonials. Not a nice pitch deck. Structure.
Test one: do they take the risk, or do you?
Who is exposed if it does not work? If you pay a deposit, sign for a year and own nothing at the end, the answer is you. If they build the thing before you pay, let you cancel monthly and leave you owning the site and domain, the answer is them.
An agency that structures the deal so that it loses if you are unhappy has given you a reason to trust it that costs it something. That is the only kind of reason worth having. Our comparison of agencies that build before you pay is a short list for that reason.
Test two: can you measure them with your own numbers?
You should not need the agency's dashboard to know whether it is working. Count your enquiries. Ask every caller how they found you. Count the jobs. If the agency's reporting and your notebook disagree, your notebook wins.
A trustworthy agency will help you set that up and will want to be judged on it. One that steers you towards 'impressions' and 'rankings' is choosing the measures it controls over the ones you care about. We cover the sums in how much a tradesman should spend on marketing.
Test three: will they tell you not to buy?
The clearest sign of an honest agency is one that says no. No, you do not need ads yet, fix your reviews first. No, we do not do LinkedIn, try someone who does. No, at your job values this will not pay back. Every agency we rate has somewhere on its site a description of who it is not for.
If the answer to 'is this right for me?' is always yes, you are talking to a salesperson, not an adviser.
| Test | Pass | Fail |
|---|---|---|
| Who carries the risk? | Built first, cancel monthly, you own the assets | Deposit, 12-month term, they own the domain |
| Can you measure it yourself? | They help you track enquiries and jobs | They report impressions and rankings |
| Will they say no? | Clear about who they are wrong for | Everyone is a fit |
What you owe them in return
Scepticism cuts both ways. If an agency passes those tests, give it a fair run. Three months minimum before you judge it, your phone answered, your quotes sent the same day, your photos supplied. An agency cannot make a business with a full voicemail box and a two-week quote lag succeed, and it is not fair to blame it when it does not.
Do the free groundwork first too. Our list of seven things to do before paying any agency exists so that when you do hire someone, you can tell whether they are adding anything.
Where that leaves you
Start from no. Make them earn yes with structure, not words. Pay only where the deal is built so the agency loses if you are unhappy, measure it with your own numbers, and favour the ones who tell you what they are not good at. Then hold up your end.
That is not distrust. It is how you would want a customer to treat you.
Frequently asked questions
Are all marketing agencies untrustworthy?
No. The point is that you cannot inspect the work up front, so caution is the correct default. Agencies that build first, let you leave and help you measure results yourself have earned a fair run.
How long should I give an agency before judging?
Three months, provided you are answering the phone and quoting quickly. Shorter than that and the numbers are too small to mean anything.
What is the single biggest trust signal?
An agency that carries the risk: builds before you pay, lets you cancel monthly and leaves you owning your site and domain.