UK Company Types Explained: Ltd, PLC, LLP, CIC & More

The UK has several business structures, and the type tells you a lot about a company — how it's owned, who's liable, and what it must file. The most common is the private company limited by shares (Ltd), but you'll also meet PLCs, LLPs, community interest companies and structures that aren't companies at all, like sole traders. Here's how to tell them apart and why it matters.

Private limited company (Ltd)

By far the most common type on the register. An Ltd is limited by shares, owned by shareholders, and run by directors; the owners' liability is limited to what they've invested. It must file annual accounts and a confirmation statement. When people say "a company," this is usually what they mean.

Public limited company (PLC)

A PLC can offer its shares to the public and may be listed on a stock exchange. PLCs face stricter requirements — a higher minimum share capital and fuller reporting — and are far fewer in number than private companies.

Limited liability partnership (LLP)

An LLP blends a partnership with limited liability. It's owned by members rather than shareholders and is common among professional firms — solicitors, accountants and consultancies. LLPs register at Companies House and file accounts, but their internal structure differs from a company limited by shares.

Company limited by guarantee

Instead of shareholders, a guarantee company has members who agree to contribute a nominal amount if it's wound up. It's a common structure for clubs, charities, membership bodies and social enterprises, where there are no profits to distribute to owners.

Community interest company (CIC)

A CIC is a company created for social or community benefit, with an "asset lock" that keeps its assets working for that purpose. CICs are regulated in addition to Companies House and are easy to spot by the CIC suffix.

Sole trader (not a company)

A sole trader is an individual running a business in their own name. Crucially, sole traders are not registered at Companies House and have no company number — they register with HMRC for tax instead. This matters for research and outreach: you won't find a sole trader on the register, and they carry stronger personal-data protections than a registered company.

Why the type matters

• For research — the type shapes what a company must file and how much financial detail you'll see.
• For prospecting — targeting by structure (e.g. LLPs for professional-services outreach) can sharpen a list. Combine it with SIC codes and region to focus.
• For compliance — sole traders and some partnerships have stronger protections than companies, so confirm the entity type before any outreach.

You can see the mix of types forming in any sector or city on the live register. For the official definitions, see the GOV.UK guide to business structures.