What Is SEO, in Plain English?
SEO stands for Search Engine Optimisation. In practice, it means making your website easier for Google to find, understand, and recommend to people searching for what you offer.
When someone types "emergency plumber London" or "best dentist in Manchester" into Google, SEO determines who appears on page one. Everyone else gets buried on page four where nobody looks.
An SEO agency's job is to get your business into those top results and keep it there.
What an SEO Agency Actually Does (Month to Month)
This is where most agencies go vague. Here's what the work actually looks like:
1. Technical SEO
Before anything else, your website needs to be technically sound. This means:
- Making sure Google can crawl and index your pages
- Fixing broken links, redirect errors, and duplicate content
- Improving site speed (slow sites rank lower)
- Ensuring the site works properly on mobile
Think of this as the foundations. Without it, everything else is built on sand.
2. Keyword Research
An agency will identify the specific search terms your potential customers are using. Not just obvious ones like "dentist London", but longer and more specific phrases like "private dentist accepting new patients London" that have less competition and higher intent.
This tells you what content to create and what words to use throughout your site.
3. On-Page Optimisation
This is the process of making each page on your site as relevant as possible for its target keyword. That includes:
- Page titles and meta descriptions (what shows up in search results)
- Headings and structure
- The actual content on the page
- Images and their alt text
Most small business websites have significant on-page issues that are relatively straightforward to fix. Sorting them out can produce noticeable results quickly.
4. Content Creation
Google rewards websites that consistently publish useful, relevant content. Blog posts, service pages, FAQs and guides all give Google more reasons to rank you and give potential customers more reasons to trust you.
A good agency will either write this content for you or give you a clear brief to follow.
5. Link Building
Links from other websites to yours act as votes of confidence in Google's eyes. The more reputable sites that link to you, the more authority your site builds and the higher you rank.
This is one of the most time-consuming parts of SEO and one of the hardest to do well. It involves outreach, PR, content partnerships, and local directory listings.
6. Reporting
Every month, a good agency should show you what's improving and why. Rankings, organic traffic, enquiries generated. Measurable numbers, not vague activity reports.
Is It Actually Worth It for Small Businesses?
Honestly, it depends on a few things.
SEO is worth it if:
- Your customers search Google before making a decision (most do)
- You're in a competitive local market where page 1 matters
- You're playing a long game, as SEO builds compounding value over time
- You want leads that don't stop the moment you stop paying, unlike with Google Ads
SEO might not be the right fit if:
- You need leads immediately, as SEO typically takes 3 to 6 months to show meaningful results
- Your budget is very limited, as underfunding SEO produces little to no results
- Your business relies entirely on word of mouth and referrals with no online presence
For most UK small businesses in trades, dental, restaurants, or professional services, SEO is one of the highest return marketing channels available. But it has to be done properly.
What to Watch Out For
Not all SEO agencies are equal. Here are red flags to avoid:
- No clear reporting. If they can't show you what improved, be suspicious.
- Very cheap monthly retainers. Quality SEO work takes time. £99 a month isn't buying much.
- Lots of activity, no results. Posting on social media and sending emails isn't SEO.
Ask any agency you speak to:
"What specifically will you do in the first 90 days, and how will we measure whether it's working?"
Their answer will tell you a lot.
What Should You Pay?
In the UK, expect to pay:
- £500 to £1,000 per month for a small local SEO campaign
- £1,000 to £3,000 per month for a competitive local or regional campaign
- £3,000 or more per month for national or highly competitive industries
Anything significantly below these figures is unlikely to produce real results. The work simply takes time: research, implementation, content, outreach.
A good SEO agency covers a lot of ground: technical fixes, keyword research, content, link building, and ongoing optimisation. The best ones are transparent about what they're doing and focused on the numbers that actually matter to your business.
If you're a UK small business that wants to generate more enquiries through Google, SEO is worth serious consideration. The key is finding an agency that will be honest with you about timelines, show you clear results, and treat your budget like it matters.
Varentis is a UK digital marketing agency specialising in SEO and performance websites for all businesses. If you'd like a free audit of your current online visibility, get in touch.
