I've web scraping and research skills backed by several information sources and tools to build your database. Kindly find sample list as follows:
Interior Designers in NZ: Terry Lobb Colour & Design Ltd, Malcolm & Sumner Design, Sarah Kerr Design, Active Furnishers Ltd, Design Team, Lucid Commercial Design Limited, Vandercoup Interior Design & Colour Consultants., Chrissie Moore Interiors, Still Deborah Interior Design, Design & Colour Concepts...
There is more where those came from, enough to complete your database and deliver to you within specified timeframe. Shall we get started?