What Does an SEO
Agency Do for Startups?
Behind every monthly retainer is a four-week delivery cycle. This is what happens week by week, what shows up in your inbox plus what the agency should be doing that you cannot see.
An SEO agency runs a structured four-week cycle each month. Week 1 is strategy plus content briefs. Week 2 is content production plus technical work. Week 3 is publishing, on-page optimisation plus authority outreach. Week 4 is performance review plus next-month planning. At the Foundations tier you should expect two pieces of content, technical improvements, internal linking work plus a written progress report every three weeks. Everything else is variation on this cycle.
Three numbers that show
the work is actually happening
Founders worry that SEO retainers fund "thinking time" rather than deliverables. They should not. Real startup SEO produces visible artefacts every single month. These three numbers tell you whether yours does.
Content per month
Two pieces at Foundations £350. Four at Growth £750. Eight at Scale £1,550. If the number is lower than this, the retainer is underdelivering. If higher, quality is probably suffering.
Reporting cadence
Three-weekly written updates with what was done, what moved plus what is next. Monthly is too slow for startup decision-making. Weekly is too granular for SEO to have changed.
Senior delivery hours
Hours of senior-mix delivery per month at the Foundations tier. Strategy plus technical plus content production plus account management combined. Lower hours mean junior-only delivery.
A monthly SEO retainer is three jobs stacked
The phrase "SEO retainer" hides what is actually three different jobs being done in parallel. Each has its own cadence, its own deliverables plus its own metrics. The agencies that produce results sequence these jobs properly across the month. The ones that do not just produce content plus call it SEO.
The three jobs are content production, technical work plus authority building. Each needs roughly equal attention even though content is the most visible. Below the line founders often want more of the visible one (content) plus less of the invisible ones (technical, authority). That instinct is wrong. The visible work compounds only because the invisible work makes it possible.
The four-week cycle below is how we sequence these three jobs across a typical month. The structure is the same across every retainer tier. What scales is the depth of work in each week plus the volume of output produced. The shape stays constant.
For the full commercial picture of how we deliver this for UK startups, the SEO for Startups service page sets out exactly what is included, what it costs plus what results to expect inside the first twelve months.
Three workstreams running in parallel
Every week of the cycle touches all three. The proportions shift but none of the three ever drops to zero. If an agency report mentions only one, two are being neglected.
Content Production
Original written content built around buyer-intent keywords. Briefs, drafts, edits, publication plus internal linking. The most visible workstream plus the easiest to inspect for quality.
Technical Work
Site speed, indexation monitoring, schema deployment, sitemap updates, crawl error fixes plus quarterly site audits. Invisible to clients but essential to ranking. Cheap retainers skip this.
Authority Building
Founder PR, partner content placements, original data plus selective outreach. The slowest stream to build but the one that ages best. Often handled poorly or not at all by cheaper agencies.
The agencies that overdeliver on content (eight pieces a month at Foundations pricing) are almost always underdelivering on technical or authority. The maths does not allow all three to be excellent at the same hour budget. Pricing transparency is how you tell whether the agency is being honest about what gets dropped to keep the content count high.
The four-week monthly delivery cycle
What happens each week of a typical Lillian Purge startup retainer. The activities shift week to week but every week contains all three workstreams. Reports go out every third week of the cycle.
Strategy & Briefs
Plan the month
- Keyword gap analysis
- Topic selection for the cluster
- Content brief written
- Technical priorities flagged
- Authority outreach list
Production
Build the work
- Original content drafted
- Edits plus review
- Schema markup written
- Technical fixes prepared
- 3-weekly report sent
Publish & Optimise
Ship the assets
- Content published live
- Schema deployed
- Internal links updated
- Sitemap resubmitted
- URL inspection in Search Console
Review & Plan
Close the loop
- Rankings checked
- GSC performance reviewed
- Authority targets identified
- Next month's keywords scoped
- Strategy adjusted if needed
If your current agency cannot show you what is happening in any given week, that is a warning sign. Real SEO delivery is structured, repeatable plus visible. Cycles like this one are easy to inspect because they generate artefacts. Vague monthly hours are easy to disguise.
Five things SEO agencies do not do
Founders often expect adjacent marketing work bundled into an SEO retainer. Some agencies offer it, often badly. These are the five things that should sit outside the SEO scope. Adding them in usually means SEO suffers.
Run paid ads
Social posts
Email marketing
Website redesign
Brand identity
The exception is technical website work that supports SEO directly. Site speed, schema, internal linking, redirects plus indexation fixes are all in scope because they decide whether the content can rank. Full design work, theme builds plus new feature development are separate disciplines requiring different specialists.
A great SEO agency vs
a poor one inside 90 days
You cannot judge SEO results inside 90 days. You can absolutely judge the agency. Here is what the first three months of delivery look like depending on who is doing the work.
What to watch for
- ✗Vague monthly reports. "Optimised your site, built links, improved rankings." No specifics. No URLs. No screenshots. No actual artefacts you can inspect.
- ✗Content quality drops fast. Month one is acceptable. Month three is clearly AI-generated. Month five reads like spam. Quality should improve over time, not degrade.
- ✗No Search Console access. Either they have not set it up or they will not share access. Both are unacceptable. Search Console is the source of truth.
- ✗Authority work invisible. No PR placements, no partner mentions, no original data. The links being built are from low-quality directories the agency owns.
- ✗Account manager rotation. Three different people in three months. Each one starts from scratch. The strategy drifts because nobody owns it.
What you should see
- ✓Three-weekly written updates. Specific URLs published, specific technical changes, specific keywords moving. Screenshots from Search Console.
- ✓Content quality improving. Each month's piece is better than the last as the agency learns your voice plus the niche specifics. Quality compounds.
- ✓Full Search Console plus GA4 access shared. You see what they see. Nothing hidden. Reports tie directly to Search Console data.
- ✓Visible authority work. One credible link or PR mention per month. Not directory listings. Real publications, real partners or real original data.
- ✓Consistent account ownership. Same primary contact for the entire engagement. Strategy carries across months without re-introduction.
Every month: content, technical fixes,
authority touches plus a written report.
We work with UK startups on a clear monthly retainer from £350. No setup fee. No twelve-month tie-in trap. Three-weekly updates so you always know exactly what we have done plus what has moved. Built around your runway, not against it.
This article opens the Strategy plus Execution section of our complete SEO Guides for Startups series. Together with the seven other guides in this section, it covers everything happening inside the retainer from strategy through to GBP, blogging plus site structure.
SEO Guides for Startups
The full index of every startup SEO question we have answered. Cost. Timescales. Strategy. Mistakes. Use it as your reference plus come back to it whenever a new question comes up.
More from the startup SEO guide
If you now know what the agency does, the next question is how the strategy gets shaped in the first place. Startup SEO Strategy walks through how to choose what to rank for plus how to sequence the work. Setting Startup SEO Goals covers what to actually commit to in writing. How an SEO Agency Delivers for Startups goes deeper on the cycle described above.