What should I look for in an SEO agency?

Look for named deliverables, transparent pricing, case studies with real numbers, a clear measurement cadence (quarterly is ideal), and a willingness to explain what they do in plain language. Avoid agencies that guarantee rankings or lock you into 12-month contracts before showing any results.

How much should an SEO agency charge per month in the UK?

Serious SEO work in the UK typically costs between £1,500 and £5,000 per month for a small to mid-sized business. Below £500 per month, the agency is either automating everything or spreading themselves too thin. The right question is not how much it costs but what named deliverables you receive and how outcomes are measured.

Can an SEO agency guarantee rankings?

No. Any agency that guarantees a specific ranking position is either misleading you or using tactics that risk penalising your site. Google's own documentation states that no one can guarantee a number-one ranking. A credible agency guarantees a process and measures outcomes transparently.

What is the difference between an SEO agency and an SEO consultant?

An SEO consultant is typically one person who advises on strategy but may not execute the work. An SEO agency has a team that both advises and implements. The right choice depends on whether you need advice or execution. Many businesses need both.

How long does SEO take to show results?

Google's own guidance says meaningful SEO results take four to twelve months. Any agency promising results in weeks is either targeting very low-competition terms or overpromising. A structured 90-day evidence cycle gives you a clear picture of progress without waiting a full year.

How to Choose an SEO Agency in the UK

Most “best SEO agency” lists are paid placements

Search for “best SEO agency UK” and the first page of results is dominated by directories and listicles. Most of these are pay-to-play: agencies pay to appear, and the “ranking” reflects budget, not quality. This is not a useful way to choose who handles your online visibility.

The better approach is to know what questions to ask, what answers to expect, and what red flags to walk away from.

Seven questions to ask before signing

1. How do you measure outcomes?

The answer should involve specific metrics tied to business results: enquiries generated, ranking positions for named keywords, citation rates across AI engines, and conversion rates. If the answer is “we send you a monthly report”, ask what the report measures. Activity (pages published, links built) is not the same as outcomes (rankings moved, enquiries increased).

2. What named deliverables will I receive?

A credible agency can name what you will receive at each stage. At Qyliq, for example, every engagement produces a Visibility Briefing, an Authority Graph Audit, and a Share-of-Voice Quarterly. These are named, repeatable documents you can hold the agency to. If the agency cannot name what you will receive, you are buying hours, not outcomes.

3. What does your pricing include?

Transparency matters. Ask for a breakdown of what is included at each price point. Compare this against published pricing from agencies that disclose their rates. If the pricing is hidden behind a “get in touch” wall with no indication of range, that is a deliberate choice.

4. Can you show me a case study with real numbers?

Case studies should include specific, verifiable numbers: percentage growth in organic traffic, ranking positions achieved for named keywords, conversion improvements, and the timeframe involved. Vague claims like “we helped a client grow their business” are not case studies. See real case study examples for what specificity looks like.

5. What are your contract terms?

Month-to-month or quarterly contracts with a clear exit clause are standard for agencies confident in their work. A 12-month lock-in before you have seen any results is a warning sign. The agency is protecting their revenue, not your interests.

6. Who does the actual work?

Some agencies sell at senior level and deliver at junior level. Ask who will work on your account, what their experience is, and whether the person in the sales meeting is the person doing the work.

7. How do you handle AI search visibility?

This is a question most agencies cannot answer well in 2026. Search is splitting: traditional SEO handles Google rankings, while Answer Engine Optimisation handles whether AI engines like ChatGPT and Perplexity recommend your business. An agency that only talks about Google is solving half the problem.

Red flags to walk away from

Guaranteed rankings. Google’s own documentation states that no one can guarantee a specific ranking. Any agency making this claim is either dishonest or reckless.

Black-box reporting. If you cannot understand what the report says, the report is designed to obscure, not inform. Reports should be readable by someone who is not an SEO specialist.

No case studies with numbers. An established agency should have at least three case studies with specific, dated results. If they have been operating for years and cannot show evidence, that tells you something.

“We handle everything, you don’t need to be involved.” Good SEO requires input from the business. The agency needs to understand your services, your customers, and your competitive positioning. An agency that asks nothing of you will produce generic work.

What a good first engagement looks like

The best agencies do not ask you to commit to a 12-month retainer before understanding your situation. They start with a diagnostic: an audit or briefing that maps where you stand, identifies the gaps, and gives you a clear picture before you commit to anything.

At Qyliq, this is the Visibility Briefing: a structured assessment of your position across Google and AI search engines, delivered as a named document with specific findings and a prioritised action list. If you proceed to ongoing work, the briefing fee is credited in full.

This model protects both sides. You get evidence before commitment. The agency demonstrates competence before asking for trust.

How to evaluate results after 90 days

After three months of work, you should be able to answer these questions:

Are we ranking for more keywords than before? Not vanity keywords, but terms your actual buyers search for.
Has organic traffic increased? Measured in Google Search Console, not just Google Analytics (which conflates channels).
Are AI engines citing our business? A structured probe across ChatGPT, Perplexity, Claude, and Google AI Overviews should show movement.
Have enquiries changed? The ultimate measure. SEO that generates traffic but not enquiries is not working.

If the agency cannot answer these questions with data after 90 days, the engagement is not working. A quarterly evidence cycle makes this evaluation natural rather than adversarial.