Do you need to register a company in Ireland? How do you register a company in Ireland? Company set up requirements. Do you need to register a company in Ireland? How do you register a company in Ireland? Company set up requirements. Do you need to register a company in Ireland? How do you register a company in Ireland? Company set up requirements. Do you need to register a company in Ireland? How do you register a company in Ireland? Company set up requirements. Do you need to register a company in Ireland? How do you register a company in Ireland? Company set up requirements.