An agency for SEO is a team that improves your website’s visibility in Google and AI search so more of the right customers find you. Most UK small and medium businesses pay roughly £500 to £3,000 a month. Choose one on proven experience and clear deliverables, and expect honest reporting rather than promises of rankings.
At a glance
- Depending on industry, competition and goals, UK small and medium businesses typically pay roughly £500 to £3,000 per month for an SEO agency in 2026 (Iseka Agency).
- SEO agency work typically covers keyword research, on-page optimisation, technical SEO, link building, content creation and analytics reporting (seo.com).
- Pricing is usually one of three models: monthly retainer, one-off project or hourly consulting (Ibix Agency).
- Very cheap SEO, such as £99 a month, usually ends up costing more in the long run (Webolific).
- We have been trading since 2009 and are based in Leeds, with an in-house team.
What does an agency for SEO actually do?
An SEO agency researches what your customers search for, fixes technical and on-page issues, creates content and builds authority through links. It also reports on results, so your site earns more organic enquiries and sales. It is ongoing work rather than a one-off fix.
Different agencies package things differently, but the core of the job is much the same everywhere. You can read other descriptions on seos.co. Here are the six services you should expect to see in any decent proposal.
The six core services
- Keyword research: finding the words and questions your customers type into Google, and judging which are worth going after.
- On-page SEO: improving page titles, headings, copy, internal links and images so each page is clear to both people and search engines.
- Technical SEO: fixing the things under the surface, such as site speed, crawl errors, mobile layout and page structure.
- Link building: earning mentions and links from other reputable websites, which signal that your business can be trusted.
- Content: writing and publishing pages, guides and articles that answer real customer questions.
- Reporting: showing what changed, what it led to and what happens next.
A local example
Picture a Leeds electrician who wants more boiler-room rewiring and fuse board jobs from the city and surrounding towns. The agency would check which searches people actually use, tidy up the Google Business Profile, build or improve a page for each service and area, and make sure the site loads quickly on a phone. That is local SEO: helping a nearby customer find you at the moment they need you.
AI search now sits alongside rankings
Google still matters, but people also get answers from AI Overviews and AI assistants. These tools tend to lift clear, well-structured answers from pages they trust. A good agency now writes with that in mind: direct answers near the top, tidy headings, accurate facts and a site that is easy to read for machines. Some call this generative engine optimisation, or GEO. In practice it is good SEO with extra care over clarity.
What a typical month looks like
Deliverables vary, but a month on a retainer often includes:
- A small batch of technical fixes from an ongoing audit list
- Updates to existing pages that are close to ranking well
- One or more new pieces of content tied to a keyword plan
- Outreach to earn links or local citations
- A report covering visibility, traffic, enquiries and next steps
How much does an SEO agency cost in the UK?
Basic local SEO costs less and enterprise work costs well above that, but most UK small and medium businesses pay about £500 to £3,000 a month. These figures reflect 2026 pricing guides, so treat them as a guide rather than a quote.
Monthly cost by tier
| Tier | Typical monthly range | What it usually includes |
|---|---|---|
| Basic local | Around £300 to £750 | Google Business Profile, local citations, basic on-page work for a small number of pages |
| Small business | Around £500 to £1,500 | Keyword research, on-page updates, some content, light technical fixes, monthly reporting |
| Growth | Around £1,500 to £3,000 | Regular content, active link building, deeper technical work, conversion advice |
| Enterprise | £3,000 and well above | Large sites, several markets, ecommerce catalogues, dedicated team and detailed analytics |
These tiers are our summary of the ranges published in the 2026 guides from Iseka Agency and CompareSEO Bristol. Sources differ slightly, and some top the typical small business range out at £2,500, so use the numbers to sense-check a proposal rather than to set a fixed budget.
Cost by billing model
According to Ibix Agency, pricing usually comes in one of three forms.
| Model | How it works | Best for |
|---|---|---|
| Monthly retainer | A fixed monthly fee for an agreed set of work | Businesses that want steady, ongoing growth |
| One-off project | A set price for a defined job, such as an audit or site migration | Clear, finite problems or a new site launch |
| Hourly consulting | You pay for time, often for advice or training | Teams with in-house skills who need guidance |
We do not publish our own prices here because every job is different. If you would like a figure for your business, ask us for a tailored quote.
What affects the price of SEO?
Price rises with market competition, your site’s starting condition, who does the work and how much scope you want covered. Two businesses can ask for the same thing and get very different quotes for good reasons.
How competitive your market is
Winning searches in a crowded sector takes more effort than in a quiet one. Ecommerce is a good example: many shops sell similar products, so product pages, category pages and links all need more attention. A local trade with few rivals in its area may need far less.
The state of your website
An old, slow or messy site carries technical debt. Before new content can do its job, someone has to fix broken structure and heavy pages, as well as duplicate content. That clean-up adds to the early cost, though it often lowers the effort needed later.
Who does the work
An in-house agency team, an outsourced supplier and a freelancer all price differently. Cheaper options can work well for small jobs, but ask who actually touches your site and how the work is checked.
Scope
The number of pages, locations and content pieces matters. A business serving five towns needs more location pages than one serving a single street. Ten new articles a month cost more than two.
What should you look for when choosing an SEO agency?
Choose an agency with proven experience, a named in-house team, clear monthly deliverables, transparent reporting and no guaranteed rankings. Those five things tell you more than any sales pitch.
A simple checklist
- Experience: how long have they been trading, and in which sectors?
- Case studies: can they show real work and explain what was done, not only headline numbers?
- In-house or outsourced: who will actually do the work on your site?
- Reporting access: will you have your own access to Google Analytics and Search Console?
- Contract terms: what is the notice period, and do you keep your content and accounts if you leave?
How to read a proposal
A proposal worth trusting names the work, not just the outcome. Look for a list of monthly deliverables, the pages or keywords being targeted, how success will be measured and who is responsible. If it is mostly vague phrases about boosting your presence, ask for detail.
Questions for the first call
- Who will work on our account, and are they in your team?
- What will you do in the first three months?
- How will you report, and what will we see?
- What would you fix first on our site, and why?
- What happens to our content and data if we part ways?
Why customers choose us
We have been trading since 2009. Our experienced in-house team delivers the work itself. Customers tell us they choose us for outstanding customer service, and we keep that at the centre of how we run every project. It is the kind of approach we would suggest you look for in any agency you shortlist.
Reviews and how to check them
Read reviews on independent platforms such as Google rather than only on an agency’s own site. Specific comments about communication and results are the ones to value, and be cautious where every review sounds the same. Asking to speak to a past client helps too.
What are the red flags when hiring an SEO agency?
Be wary of guaranteed page-one rankings, very cheap retainers, vague reporting, locked-in contracts and agencies that will not explain their methods. Any one of these deserves a closer look.
Guarantees and secret techniques
No one controls Google, so no one can promise a position. Claims of a secret method are usually a way to avoid explaining the work. Good agencies are happy to tell you what they do and why.
Bulk low-quality links
Buying hundreds of links from poor sites may look like progress in a report, but it can harm your site. Ask where links come from and how they are earned.
No access to your own data
Your analytics and Search Console accounts belong to you. If an agency keeps them under its own login or will not share reports you can check, that is a problem.
Prices far below the market
Compare any quote with the ranges above. Webolific notes that very cheap SEO, such as £99 a month, usually ends up costing more in the long run. At that price there is rarely enough time to do the job properly.
Should your SEO agency also handle your website?
Often yes, because technical SEO depends on how the site is built, and an agency that designs and develops can fix speed, structure and conversion issues at source. It avoids the delays of passing fixes between separate suppliers.
How the build affects rankings
Page speed, clean structure and well-made templates all influence how easily search engines read your site and how comfortable it is for visitors. If a template creates slow pages or messy headings, every new page you add inherits the same problem. Fixing the template once is far better than patching pages one by one.
Bespoke builds, ecommerce and integrations
Complex sites bring their own SEO questions: product filters that create thousands of near-duplicate pages, booking systems, member areas and software integrations. We are known for high quality designs and bespoke complex builds, so we can plan SEO into the structure from the start rather than bolting it on later.
Conversion matters as much as traffic
More visitors only help if some of them get in touch or buy. Clear calls to action, quick pages and simple checkouts turn search traffic into enquiries. An agency that sees both sides can improve them together.
Web design, development and SEO under one roof
We are based in Leeds and offer web design, development, software platforms, AI-driven systems and SEO. We work with ecommerce, trade and fitness brands that want to move faster and scale, and having these skills in one team keeps the plan joined up. More detail is on our website.
How long does SEO take to work?
Most businesses see early movement within a few months, but meaningful growth usually takes longer and depends on competition and starting point. Be cautious of anyone who offers a fixed timeline.
What to measure and when
- Around 3 months: look at visibility. Are more of your pages showing in search, and are impressions and rankings moving the right way? Technical fixes should be done by now.
- Around 6 months: look at enquiries. Is organic traffic bringing more calls, forms and quote requests?
- Around 12 months: look at revenue. Can you link organic search to sales or booked jobs, and does the return justify the spend?
Why SEO is ongoing
Competitors keep publishing, Google keeps updating and customers keep changing how they search, including through AI tools. SEO works best as steady, continuing effort rather than a one-off job that is finished and forgotten.
If you are comparing agencies and would like a clear, honest view of what your site needs, get in touch with our Leeds team at PS. We will talk through your goals and give you a tailored quote.
Frequently asked questions
Is SEO dead or evolving in 2026?
It is evolving. People still search on Google, and AI Overviews and assistants now sit beside the usual results. Clear, trustworthy content matters more than ever, and so does a well-built site.
Is an SEO agency worth it for a small business?
It can be, if you have a clear goal and a budget that covers real work. Compare the monthly cost with the value of a new customer, and start with a focused scope.
Should I choose a local SEO agency in Leeds?
A local agency can be easier to meet and understands the area you serve. What matters most is experience, clear deliverables and honest reporting, wherever the agency is based.
Retainer or one-off SEO project: which is better?
A retainer suits ongoing growth. A one-off project suits a defined problem such as an audit or a site move. Many businesses start with a project and then move to a retainer.
Can I do SEO myself instead of hiring an agency?
Yes, especially for the basics such as your Google Business Profile and page titles. It takes time to learn and keep up with, so many owners hand over the technical and content work as they grow.
What should a monthly SEO report include?
It should show visibility, organic traffic, enquiries or sales, the work completed that month and the plan for the next. You should be able to check the data in your own accounts.
How do I know if my SEO agency is doing a good job?
Expect steady progress in visibility first, then enquiries and revenue over time. Good agencies explain what they did, why it matters and what comes next, in plain words.
Do SEO agencies help with AI search results?
Yes, many now do. The work centres on clear answers, well-structured pages, accurate information and a site that is easy for machines to read. No one can promise inclusion in AI answers, but good practice improves your chances.