The verdict in three sentences
For a family office in London, the right search investment depends first on whether you want to be found at all: many single family offices keep a minimal site on purpose, while multi family offices need credibility with prospective families, introducers and deal partners. When visibility matters, AEO/GEO, being described accurately when someone asks AI assistants like ChatGPT about family offices in London, often deserves priority over broad SEO, because the audience is tiny and checks names rather than browsing results. Market budgets in 2026 run roughly GBP 2,000 to 9,000 per month, and both channels should be judged on qualified introductions and a dated record of AI answers, never on traffic volume.
SEO and AEO/GEO compared for a London family office
| Dimension | SEO | AEO/GEO |
|---|---|---|
| What it targets | Searches such as "multi family office London" or "family office services Mayfair" | Accurate mention when an adviser or family asks an assistant to name or describe offices |
| Audience size | Small, with many job seekers and students | Very small, mostly principals, advisers, introducers |
| Time to first effect | 4 to 9 months on niche terms | Weeks for own-site facts, 3 to 6 months for third-party sources |
| 2026 market budget ballpark | GBP 3,000 to 9,000 per month | GBP 2,000 to 6,000 per month; diagnostic GBP 2,500 to 6,000 |
| Main metrics | Impressions on niche terms, enquiries from the site | Share of answers naming the office, accuracy, sources cited |
| Main risk | Drawing the wrong audience, financial promotion breaches | Outdated or wrong facts about team, services or regulatory status |
These ranges reflect typical quotes from London agencies and consultants, not a published study.
Where to invest, by situation
| Situation | Recommended focus | Why |
|---|---|---|
| Single family office, no outside clients | Neither; a short factual site with correct contact and governance | Visibility brings unwanted approaches |
| Single family office active in direct deals | Light AEO/GEO on facts and investment focus | Founders and co-investors check names before replying |
| New multi family office | AEO/GEO first, then niche SEO | Being described correctly matters more than ranking |
| Established multi family office | Both, SEO for service pages, AEO/GEO for reputation facts | Families compare several offices over months |
| FCA-authorised firm with regulated content | Both, with compliance sign-off on every page | Financial promotion rules apply to web content |
| Budget under GBP 2,000 per month | Fix the site's factual pages, then measure | Those pages feed search engines and assistants alike |
How each channel is measured
SEO is measured with Search Console, focusing on a short list of niche queries, and with enquiry tracking that separates prospective families from recruiters and vendors. In a family office, five qualified conversations a year can justify the spend, so volume charts mislead.
AI visibility is measured with a fixed set of questions, for instance 30 prompts such as "which multi family offices in London serve entrepreneurs after a business sale", asked on set dates each month, with every answer kept. The record shows the share of answers naming the office, whether the team, services and regulatory status are described correctly, and the sources the assistant appears to use. Introducers should also be asked how they came across the office. No provider can promise that an assistant will recommend you.
Regulatory context matters. Firms authorised by the FCA must treat web content that invites investment activity as a potential financial promotion. Enquiry forms and cookies fall under the UK GDPR, the Data Protection Act 2018 and PECR, supervised by the ICO. The Equality Act 2010 makes accessibility a sensible priority, with WCAG 2.2 AA as the usual target. This is not legal advice.
What a diagnostic covers
In broad terms, a diagnostic records how assistants describe the office and comparable offices today, checks the accuracy of statements about team, services, governance and authorisation, identifies the sources shaping those answers, reviews the site's factual pages and their consistency with Companies House and press mentions, and recommends whether SEO, AEO/GEO or neither deserves budget. A secure client portal, if needed, is a separate project on quote.
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Illustrative example: Hartwell Stewardship, a fictional multi family office in St James's, weighs a GBP 5,000 monthly budget.
- Split chosen: GBP 2,000 SEO + GBP 3,000 AEO/GEO = GBP 5,000 per month, so GBP 60,000 a year.
- Measurement: 30 prompts x 12 months = 360 dated answers, plus enquiry tracking.
- Issues found: one assistant described a partner who left two years ago, another omitted that the firm serves families after a business sale, and the site had no page on governance.
- Economics: if one new family relationship brings around GBP 120,000 in annual fees (market assumption), a single new family covers the year twice (120,000 / 60,000 = 2).
FAQ
Should a single family office invest in SEO at all?
Usually not. A short, factual site with correct governance and contact details is often enough, and an annual check of what assistants say costs far less, around GBP 2,500 to 6,000 for a diagnostic.
How long before AI answers reflect changes?
Your own site can be picked up within weeks; press, directories and Companies House consistency take 3 to 6 months to shift answers reliably.
Can our site describe investment performance?
Only within the financial promotion rules that apply to you, with appropriate risk wording. Many offices avoid performance figures publicly and share them in private meetings.
Do we need multilingual content?
If you serve families from the Gulf, Europe or Asia, often yes, for a few key pages. Translation of 10 to 15 pages by a specialist typically costs GBP 1,500 to 4,000 (ballpark).
What does a diagnostic deliver?
A dated record of 30 to 60 answers, errors found, sources cited, a comparison with similar offices and a budget recommendation, usually within 2 to 3 weeks.
Find out how AI assistants describe your firm. We will record what assistants say today about your office, team and services, and show what is out of date. Request a diagnostic quote: reply within 48 hours.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
