When you incorporate your company on Companies House, you register your company name as well. Before you register your company, you will have to prepare a company name. Private limited company names have to be unique. Do this by checking if the company name you want is available by using the name availability tool on Companies House. Also, check with the UK Intellectual Property Office that your chosen company name does not clash with an existing trademarked name. No matter how unique your company name is, it will usually end with either ‘Limited’ or ‘Ltd’. If your company was registered in Wales, you can include the Welsh equivalents ‘Cyfyngedig’ and ‘Cyf’ instead.