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You can call a UK limited company almost anything, with some firm exceptions. Names are rejected if they are:
Some words need permission or evidence before they can be used. Common ones include British, National, Royal, Institute, Bank, Trust, Group, Holdings, Charity and Association. Some need a supporting letter from a named body; others simply need you to meet a definition. “Group”, for instance, generally expects you to actually be a group of companies.
A name being accepted by Companies House does not mean it is free to use. Registration is not a trade mark, and an existing business with prior rights in the name can still stop you — including forcing a change after you have printed everything.
Names that clear all three are far rarer than names that clear one, which is why generating a large batch and filtering is more productive than agonising over a single favourite.
Your registered company name and the name you trade under do not have to match. A company registered as “Beaumont Holdings Ltd” can trade as “Fold”. The registered name must still appear on your website, invoices and business letters, along with the company number and registered office.
Names identical to an existing registration, offensive names, names implying a government connection without permission, and names containing sensitive words without the required approval.
No. Registering at Companies House gives you no trade mark rights. A business with prior rights can still force you to stop using a name you have registered.
Yes. Your registered name must appear on your website, invoices and letters, but you can trade publicly under another name.
A private limited company name must end in “Limited” or “Ltd”, or the Welsh equivalents. It is required on the registered name, not on your trading name.