How to Choose an SEO Agency in the UK

SEO is unusually hard to buy. The work is invisible, the feedback loop is months long, and the worst suppliers produce the most impressive-looking reports. Here is how to tell them apart before you sign.

Claims that should end the meeting

• "We guarantee first-page rankings." Nobody controls Google's ranking systems. The guarantee is either meaningless (first page for your own brand name) or a lie.
• "We have a special relationship with Google." No such thing exists. Google Partner status relates to Ads, not organic.
• "We'll build 500 backlinks a month." That volume is only achievable from link farms and marketplaces. It is a link scheme violation and increasingly it simply does not work.
• "Our proprietary algorithm." Usually a rebranded off-the-shelf crawler.
• Reporting they own. If Search Console and Analytics sit in the agency's accounts, leaving costs you your history. That is the point of the arrangement.

The five questions

1. "Walk me through what happens in month one."
A good answer is diagnostic — crawl, audit, baseline, keyword mapping. A bad answer starts producing content before anyone has established what the problem is.

2. "Show me a client whose results plateaued and tell me what you did."
Every agency has these. One that claims otherwise is either new or not being straight. The answer tells you how they behave when things are difficult, which is the only thing you actually need to know.

3. "Who does the work?"
Pitches are frequently delivered by senior people and executed by juniors. Ask who is on your account, how many other accounts they hold, and whether you will speak to them directly.

4. "What do you need from us?"
SEO fails more often from client-side implementation delays than from bad strategy. An agency that has not thought about your development capacity has not thought about delivery.

5. "What would make you recommend we stop?"
The most revealing question in the list. An agency that cannot name a scenario where it would tell you to stop paying has never done it.

Reading the proposal

Look for scope stated in units — how many pages optimised, how many content pieces, how many keywords tracked, how many referring domains targeted. "Ongoing optimisation" is not scope.

Check the reporting structure. If it leads with rankings and impressions rather than enquiries, it is designed to look good in month three rather than to tell you the truth in month nine.

Check the exit. Notice period, account ownership, what happens to content and documentation. A supplier confident in the work does not need a twelve-month lock-in.

Agency, freelancer or in-house?

A freelancer gives you senior attention at lower cost, and works well for focused scopes. The risk is capacity — one person, one holiday, one illness.

An agency gives you breadth across technical, content and outreach, and continuity. The risk is that you buy the pitch team and get the delivery team.

In-house makes sense once you are spending £4,000+ a month, and even then most in-house teams retain a specialist for technical and audit work.

What good looks like six months in

You should be able to answer, without asking: what changed on the site last month, which pages are improving, which are not, and what the plan is for the ones that are not. If you cannot, the reporting is theatre.