To be a designer you have to be in a trade, business, or undertaking that involves you in preparing designs. In the Regulations the term ’designer’ relates to the function performed, rather than the profession or job title. So, for a construction project there could be ’traditional’ designers, such as architects, structural engineers and civil engineers, a design and build contractor etc. Building services engineers/consultants and quantity surveyors etc are also designers. You will also be a designer if you prepare drawings, specifications and bills of quantities.