Section 07 · Getting Started · Article 32

What Does an SEO Agency Do for Small Businesses?

Five service categories run continuously across the year. Strategy plus planning. Technical SEO. Content production. Authority building. Reporting plus communication. Each one contains specific deliverables with weekly, monthly or quarterly frequency. The full inventory below shows what gets done and when.

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Updated: May 2026
Written by: Andrew Odgers, MD
Reading time: 7 minutes
Quick answer

An SEO agency delivers across 5 service categories. Strategy plus planning: monthly cluster review, quarterly expansion, competitive monitoring. Technical SEO: site audits, schema, page speed, indexation. Content production: 3 to 5 substantive pages per month, on-page optimisation, internal linking. Authority building: citation work, GBP management, link outreach. Reporting plus communication: monthly written reports, 3-weekly check-ins, quarterly strategic reviews. The service inventory below lays out every specific deliverable with its frequency.

Agency delivery by the numbers

Three numbers that show
what an agency actually produces monthly

3-5pages

Substantive pages per month

Standard content production cadence for a small business retainer. 1,500+ word pages keyword-validated, schema-applied and internally linked.

3wk

Standard check-in cadence

Lillian Purge clients get written check-ins every 3 weeks. What we are working on, results to date and what comes next. Plus monthly full reports.

5cats

Service categories covered

Every retainer covers all 5 categories. Skipping any one (especially technical or authority) suppresses results regardless of how much content gets written.

What you actually pay for

An SEO retainer covers continuous delivery, not a one-time project

Many UK small business owners imagine SEO as something that happens once. You pay an agency a setup fee, they fix things, the rankings appear and you stop paying. That model does not exist because SEO is not a one-time fix. Google's algorithm, your competitors plus user behaviour all change continuously. The work has to continue or rankings decline within 6 months as competitors keep going while you stop.

What an SEO retainer actually buys is continuous monthly delivery across 5 service categories. Strategy and planning at the top level. Technical maintenance keeping the site healthy. Content production adding new pages to the cluster. Authority building accumulating signals over time. Reporting plus communication so you know what is happening. Each category has specific deliverables with weekly, monthly or quarterly frequency.

The service inventory below shows what each category contains. Use it when comparing agency proposals. Any retainer that does not cover all 5 categories will under-deliver because the missing category creates a gap that suppresses results from the work that did get done.

Three principles of agency delivery

The three principles that separate
real SEO delivery from invoice-driven activity

01 · Continuous not project-based

The work runs every month, never as a finished one-time job

Google's algorithm changes monthly. Competitors publish weekly. User search behaviour shifts continuously. An SEO programme has to match the rate of change in the environment around it. Project-based SEO ("just do everything once") fails because the environment moves on while the site stands still.

02 · Cross-category, not single-track

All 5 categories matter or none of them produces results

Content-only agencies fail when technical issues hold pages back. Technical-only agencies fail with nothing to optimise. Authority-only agencies fail because links to thin sites do not convert. The 5 categories support each other. Skipping any one creates a bottleneck that suppresses the rest.

03 · Documented, not opaque

Every deliverable visible in writing with frequency plus owner

"We do SEO stuff each month" is not a service. The deliverables should be documented with name, frequency and responsible person. You should know before the month starts what will be produced and at the end of the month receive evidence each one happened. Opacity protects underperformance.

The full service inventory

5 categories, 22 deliverables
each with its frequency badge and brief description

Use this inventory when comparing agency proposals. Frequency badges show how often each deliverable happens (weekly / monthly / quarterly). Any retainer missing items in a category creates a results gap.

SEO agency service inventory · 5 categories · 22 deliverables
Category 01

Strategy plus Planning

Cluster expansion planQuarterly
New topic clusters identified based on Semrush gap analysis plus performance review.
Keyword opportunity reviewMonthly
Fresh keyword targets flagged. Existing rankings reviewed for improvement opportunity.
Competitive monitoringMonthly
Track competitor moves. New content, ranking shifts, backlink acquisitions.
Content roadmap updateMonthly
Next 90 days of content production planned and prioritised by commercial impact.
Category 02

Technical SEO

Full site auditQuarterly
Comprehensive Semrush audit plus manual checks. Issues prioritised plus fixed.
Schema implementationMonthly
Article, FAQPage plus LocalBusiness schema applied to new and existing pages.
Core Web Vitals monitoringMonthly
LCP, INP, CLS scores checked. Performance issues flagged and fixed.
Indexation healthWeekly
GSC crawl errors reviewed. New pages submitted for indexing. Sitemap kept current.
Category 03

Content Production

3-5 new pages producedMonthly
1,500+ word substantive pages. Keyword-validated, written, edited plus published.
On-page optimisationMonthly
Title tags, meta descriptions, H1s plus image alt text reviewed and updated.
Internal linking buildMonthly
New pages linked into the cluster. Hub-and-spoke architecture reinforced.
Content refresh cycleQuarterly
Older pages updated. Stats refreshed, examples updated, dates revised.
CTA optimisationMonthly
Ranking pages get conversion-focused CTAs. Non-ranking pages get rebuilt.
Category 04

Authority Building

GBP managementWeekly
Posts published. Q&A monitored. Reviews responded to. Photos refreshed.
Citation buildingMonthly
UK directory citations added. NAP consistency verified across listings.
Link outreachMonthly
Editorial outreach for relevant high-authority links. No paid schemes.
Review acquisition supportMonthly
Review request templates plus monitoring. Owner sends, we monitor velocity.
Category 05

Reporting plus Communication

3-weekly written check-inCadence
What we are working on. Results to date. What comes next 3 weeks.
Monthly performance reportMonthly
Rankings, traffic, conversions, content output, technical health snapshot.
Quarterly strategic reviewQuarterly
Progress against 12-month plan. Pivots needed. Budget alignment check.
Asana project visibilityContinuous
Every task tracked in Asana. You can see exactly what is being worked on whenever you want.
Annual reviewAnnual
Year 1 results assessed. Year 2 strategy locked in. Scope adjustments discussed.
Compare this inventory against any agency proposal you receive. Missing deliverables in any category are gaps that will suppress results. Frequency badges should match these benchmarks (or be more frequent, not less). The named owner of each deliverable should be visible. Opacity protects underperformance, transparency protects you.
Weekly Monthly Quarterly
Five delivery checks

Five checks to apply
when assessing whether agency delivery is real

✓
All 5 categories coveredSkip any one and results suppress. Proposals missing technical or authority are red flags.
✓
Frequency stated for each deliverableWeekly, monthly or quarterly. Without frequency the work is undefined and unaccountable.
✓
Named owner per deliverable"The team" is not accountability. Named individuals are. Ask who specifically does the writing.
✓
Evidence of completion monthlyEach month you receive proof every deliverable happened. No proof, treat it as not done.
✓
Project tool accessAsana, Trello or equivalent. You can see real-time what is in progress without asking.
Real delivery vs invoice-driven activity

What a transparent SEO retainer looks like
vs an opaque one

Transparent retainer

You can see what is being done

  • All 5 service categories documented with deliverables
  • Frequency stated for every item (weekly/monthly/quarterly)
  • Named individuals owning specific deliverables
  • Project tool access (Asana, Trello) showing live work
  • Monthly evidence of completion with the report
Opaque retainer

You cannot see what is being done

  • "We do SEO" with no breakdown by category
  • No frequency stated for any deliverable
  • "The team handles it" - no named individuals
  • No project tool, no real-time visibility
  • Reports are pretty graphs without proof of work
In context: This guide is part 32 of 34 in the small business SEO operational reference.
Browse the full hub →
All 5 categories, fully documented

22 deliverables across 5 service categories.
Each named, scheduled and evidenced monthly.

Every Lillian Purge retainer covers all 22 deliverables on the inventory above. Asana access from day one. Named individuals on each item. 3-weekly check-ins and monthly evidence reports. You see what is being done in real time. From £350 per month.

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Read next

Continue through the Getting Started section

Getting Started · 33

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DIY SEO vs Hiring an Agency for Small Businesses

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Frequently asked

What does an SEO agency do for small businesses

What does an SEO agency do day to day for small businesses?
Five service categories run continuously. Strategy plus planning (monthly review, quarterly cluster expansion). Technical SEO (audits, fixes, schema, page speed). Content production (3 to 5 substantive pages per month, on-page optimisation). Authority building (citations, link outreach, GBP management). Reporting plus communication (monthly reports, 3-weekly check-ins).
How often does an SEO agency communicate with you?
Standard cadence is every 3 weeks with a written update covering what is being worked on, results to date and what is coming next. Monthly reports include rankings, traffic, conversion data and content output. Quarterly strategic reviews cover progress against the 12-month plan and any pivots needed.
What content does an SEO agency produce?
3 to 5 substantive (1,500+ word) pages per month for a standard retainer. Mix of hub pages, spoke content and service page optimisation. Each piece keyword-validated in Semrush, schema-applied, internally linked plus published with a clear CTA. Most agencies use AI tools like Claude or ChatGPT for first drafts then human editing for final quality.
Does an SEO agency build links for you?
Yes through ethical methods. Citation building on local directories (Yell, Yelp, Bing Places, industry-specific lists). Digital PR style outreach for relevant editorial coverage. Local partnership links. Google Business Profile management. Most agencies avoid paid link schemes that violate Google guidelines as the penalty risk outweighs the ranking benefit.