Britt-Marie Christoffersson is the foremost researcher of practical knitwork in Sweden. After studying at the School of Textiles in Boras and Konstfack, she became a founding member of Ten Swedish Designers (10-gruppen) in 1970. After sixteen years her interest in knitting became her main focus and she dedicated herself to the practical applications of knitwork. This resulted in the innovative work that she is so well known for. Britt-Marie has taught at the University of Arts, Crafts and Design (Konstfack) and at the Friends of Handicraft (Handarbetets Vanner) in Stockholm and is a popular course leader.
In 2017 Swedish furniture retailer Ikea paid homage to the work of the 10-gruppen by using some of their lively designs on bed linen, fabrics and other items, including Britt-Marie's Jazz design.