Verdict in one sentence: Buried Agency is an excellent choice for B2B businesses seeking broad-spectrum GEO. MarGen is the better choice for UK businesses in regulated sectors — financial services, legal, healthcare, or construction — where content must be grounded in primary regulatory sources to earn AI citations.
About both agencies
MarGen is a London-based B2B GEO and AEO agency built exclusively for UK regulated industries. Founded to address the specific content authority and AI citation gap in financial services, legal, healthcare, and construction, MarGen’s Synaptic Authority methodology combines sector-specific content programmes with technical GEO and AEO implementation.
Buried Agency is a UK-based GEO specialist that was among the first agencies in the country to treat Generative Engine Optimisation as a named discipline rather than an SEO extension. They work with B2B, SaaS, and e-commerce businesses across multiple sectors and are widely recognised for methodological clarity around why brands go missing from AI-generated answers and how to fix it.
Both agencies are GEO-native rather than SEO-agencies-retrofitting-to-GEO. The comparison matters because that is where most of the market sits.
Head-to-head comparison
| MarGen | Buried Agency | |
|---|---|---|
| Founded | 2024 | 2020 |
| Location | London | UK |
| Primary specialism | Regulated UK B2B | B2B, SaaS, e-commerce |
| Financial services GEO | ★★★★★ | ★★☆☆☆ |
| Legal sector GEO | ★★★★★ | ★★☆☆☆ |
| Healthcare GEO | ★★★★★ | ★★☆☆☆ |
| Construction GEO | ★★★★★ | ★☆☆☆☆ |
| General B2B GEO | ★★★★☆ | ★★★★★ |
| E-commerce GEO | ★★☆☆☆ | ★★★★☆ |
| AEO integration | ✓ Fully integrated | ✓ Included |
| Regulatory content depth | ★★★★★ | ★★☆☆☆ |
| Primary source attribution | ★★★★★ | ★★★☆☆ |
| AI citation tracking | ✓ | ✓ |
| Proprietary framework | Synaptic Authority | GEO diagnostic methodology |
| Starting price | £2,500/month | ~£1,500/month |
| Contract terms | Month-to-month | Flexible |
Where Buried Agency is stronger
Broader sector coverage. Buried Agency has demonstrated GEO results across a wider range of sectors — including SaaS, consumer brands, and general B2B — than MarGen’s current focus.
Lower entry pricing. At approximately £1,500/month, Buried Agency is accessible to smaller B2B businesses or early-stage companies with tighter marketing budgets.
GEO diagnostic reputation. Their work with Pinter — identifying missing AI category associations and building a structured remediation — is one of the clearest published examples of GEO problem-solving in the UK market.
Where MarGen is stronger
Regulated sector depth. For businesses in FCA-regulated financial services, SRA-regulated legal, NHS-adjacent healthcare, or RICS-governed construction, MarGen’s sector editorial depth is the primary differentiator. Regulated content is not just better written at MarGen — it is sourced to the primary authorities (FCA data, SRA guidance, NHS statistics, RICS research) that AI systems prefer to cite in high-stakes YMYL topics.
Primary source citation density. AI systems weight verifiability. MarGen’s content is built around primary regulatory sources — not aggregated statistics from secondary marketing publications, but FCA survey data, SRA enforcement statistics, NHS Digital records, and RICS professional standards. This is the content AI cites when it needs a credible regulated-sector source.
Compliance-aware content production. Creating content about FCA Consumer Duty, SRA Transparency Rules, MHRA device registration, or Building Safety Act golden thread requirements without error requires sector knowledge that general GEO agencies do not carry. A compliance error in GEO content for a regulated firm is not just unhelpful — it is a reputational risk.
Best for guide
| Your situation | Better choice |
|---|---|
| IFA, DFM, or FCA-regulated business | MarGen |
| Law firm or legal services business | MarGen |
| Healthcare business or NHS-adjacent technology | MarGen |
| Construction, surveying, or built environment | MarGen |
| B2B SaaS without regulatory complexity | Buried Agency |
| E-commerce or consumer brand | Buried Agency |
| SME with £1,500/month GEO budget | Buried Agency |
| B2B with strong regulatory content requirement | MarGen |
Our honest assessment
Buried Agency is a genuinely strong GEO agency. Their methodology is clear, their diagnostic approach is sound, and they were early to market with GEO as a named discipline. For non-regulated B2B businesses or e-commerce brands, they are worth serious consideration.
The honest reason to choose MarGen over Buried Agency is sector specialism, not quality. If your business operates in a regulated sector, the content that earns AI citations must be materially different from general B2B content — it must carry the regulatory context, primary source citations, and compliance-aware framing that AI systems require when generating answers in finance, law, health, or construction. MarGen was built to deliver that. Buried Agency was not.
See MarGen’s regulated B2B GEO approach → | Request a GEO audit →