How to Start a Business in the UK: A Practical Guide

A straightforward checklist for turning an idea or trade into a working UK business. Rules depend on your circumstances, so use the linked GOV.UK guidance and take professional advice where needed.

Choose a business structure

A sole trader runs the business personally and is responsible for its debts. A limited company is legally separate from its owners and has different reporting and tax duties. Compare both before registering.

Set up a business on GOV.UK

Register with HMRC or Companies House

Sole traders may need to register for Self Assessment with HMRC. Limited companies register with Companies House and have ongoing filing duties. Check the official steps and deadlines for the structure you choose.

Register as a sole trader Set up a limited company

Check insurance and permits

Your work may require insurance, licences, registrations or permits. Employers' liability insurance is normally required when you employ staff. Trade-specific rules can also apply, so check GOV.UK and the relevant regulator before starting work.

Find licences and permits

Price your work

Build labour, materials, overheads, non-billable time and a sustainable margin into your price. Test the numbers before committing them to a customer or contract.

Day-rate calculator · Profit margin calculator

Prepare quotes and invoices

Set out the work, price, VAT position, payment terms and validity period clearly. Keep a consistent record of what the customer accepted and what you later invoiced.

Quote and estimate generator · Invoice generator

Find your first customers and public sector work

Start with a clear service, area and customer problem. Build evidence from completed work, ask genuine customers for honest feedback and look for public sector opportunities that match your capacity.

See what you can bid for · Browse live contracts

Hire your first worker

Before hiring, check employment status, pay, right to work, insurance and workplace duties. Use official guidance and keep a genuine vacancy clear about the role and terms.

Post a job · Learn about workers on 123 Tenders

Last checked: 29 September 2026. This guide is general information, not legal, tax or financial advice.