All the information you need to help you start up a new business, including how to set up and register a company. Find out more Setting up a business Overview of the regulations and requirements for setting up a business Choose a legal structure for a new business You must choose a business structure when you start a business. Take a look at the options. Register at Companies House All limited companies in the UK, and overseas companies with a branch or place of business in the UK need to be registered with Companies House. Register your new business with HMRC How to register a new business and create an HMRC online account Checklist of things that you need to do to start a business Guidance from HMRC on what you need to do for tax and National Insurance purposes when you start up a business as a self-employed person, a partnership or a limited company Setting up and running a private limited company All the rules about running a private limited company Starting a social enterprise Information and guidance and events Find a chartered accountant The ICAEW has a service to help you find a chartered accountant near you.