The British Institute of Interior Design (BIID) is the UK’s foremost organisation for interior design practice.

Formerly known as the British Interior Design Association (BIDA), it was formed in 2002 through the amalgamation of the highly respected Interior Decorators & Designers Association (originally set up in 1966) and the globally recognised International Interior Design Association.

The British Institute of Interior Design continues to promote high standards throughout the profession, encouraging and fostering proven design ability. The BIID is a Member of IFI, the International Federation of Interior Architects & Designers.