Mary Callan studied Fashion Knitwear at Central Saint Martin's London.
She runs a creative knitwear design studio from Conway Mill in Belfast, operating under the brand name CALLAN. The designer creates and sells a range of colourful sweaters and accessories.
Her knitwear has received the Peroni Moda award and an Innovation and Craftsmanship Award from the Design and Crafts council of Ireland. Mary also produces knitwear commissions for film and TV productions.
At Belfast School of Art, she is a part time knitwear technician on the TADF degree course. In her role at the University, she demonstrates machine knitting techniques and ensures the smooth running of the knit workshop.