M3

Buying Doctors.net.uk and fixing the overseas template (2011)

Key decision·2011· M3 — the full company history →

What it means to buy a membership list

The core of this decision was not the size of the cheque but what the cheque bought. Of the $22.6M (¥2bn) acquisition cost, the assets taken on amounted to a little over ¥200m; all the rest was goodwill. M3 made a purchase that inherited almost nothing recognisable as an accounting asset, and made it as its first overseas portal acquisition. What it bought was a list of doctors and the reasons they came back to it every day — an email address on the site’s own domain, the position of being the one site that opens through a hospital’s network restrictions. The base it had spent eight years building from scratch in the United States, it took on in Britain with thirteen years already in it.

A membership list, though, is not valued once and for all at the moment of purchase. Whether doctors keep gathering there depends on how the business is run afterwards, and the goodwill amortises against profit every year for twenty years. In practice, impairments overseas surfaced repeatedly from the year ended March 2024, after the pandemic boom receded. Taking in platforms already complete on the ground and binding them together is a realistic way to build a membership base across borders — and equally a mechanism that keeps asking whether each of the things bound together can earn on its own. What M3 chose in 2011 was to take on both.

Revenue and net margin, FY2006–FY2016

Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2011 onwards — after it was taken.

Source: securities reports

Read the full dossier in Japanese →

The Japanese edition carries the complete record of this decision — the situation that forced it, the options weighed, what actually followed, and the sources behind every claim.

Other key decisions at M3


Yen amounts are converted at the average rate of each figure’s own year — not today’s rate; the revenue chart is shown in yen. Exchange rates & sources — the full ¥/US$ table →


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  • Sources are primarily each company’s securities reports and other public filings, but errors and omissions may remain.
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Data API

M3’s history, financials, executives and shareholders are published as static JSON — no key, plain GET. Full specification →

Method Endpoint Returns
GET /api/companies.json All companies
GET /api/2413/manifest.json Resource index
GET /api/2413/history.json History overview
GET /api/2413/timeline.json Chronology
GET /api/decisions.json All management decisions (index)
GET /api/2413/decisions.json Management decisions (index)
GET /api/2413/decisions/{slug}.json One decision (full dossier)
GET /api/2413/executives.json Executives
GET /api/2413/shareholders.json Major shareholders
GET /api/2413/financials.json Financial statements
GET /api/2413/financials-longterm.json Long-term results
GET /api/2413/segments.json Business segments
GET /api/2413/regions.json Sales by region
GET /api/2413/workforce.json Workforce