What Is the Who-You-Sue Test?

WHITO GLOSSARY · MEASURED DEFINITIONS

Before buying software, ask which legal entity is on the other side of the subscription and whether you can read its filings on a register you trust. It surfaced Adobe Inc. as Semrush UK Ltd’s registered controller.

The number: Semrush vs Ahrefs UK.

What it means in practice

Software is a contract, and most buyers never look at who is on the other side of it. Ownership, currency and governing law decide what happens when something goes wrong.

Before subscribing, find the legal entity, the register it files on, the currency of renewal and the law of the contract. Five minutes, once, per tool.

Whito stage: Any stage. Use it before you sign anything.

The numbers to hold onto

  • Adobe Inc. was registered as Semrush UK Ltd’s person with significant control on 28 April 2026, on the UK register for anyone to read. Semrush vs Ahrefs UK.
  • Only 9 of 27 vendors selling to UK buyers even publish a price in pounds. UK Per-Seat Software Pricing.

Where to go next

Related: The days-a-month test, The register-confirmed share, The unevidenced aisle

All terms · The files behind the numbers