Fay Fullerton trained in fashion design and period costume at London College of Fashion. She joined the Royal Opera House costume department as a costumier in 1977, was promoted to Head of Production Costume in 1999, and then appointed Head of Costume in 2013.

Fay's work can currently be seen in Alma Mater (Almeida Theatre). Recent productions include Just For One Day (The Old Vic) and The Little Big Things (@sohoplace).

 Costume design for the stage includes: In Dreams (Courtyard Theatre/Leeds), Mandela (Young Vic), Cat on a Hot Tin Roof (2009) by Debbie Allen, and The Drifters Girl (Theatre Royal Newcastle, Garrick Theatre) . Costume design for ballet include Elizabeth (2013) by Will Tuckett, Circular Ruins by Goyo Montero and Two Sides Of by Juliano Nunes (both part of the New Work New Music programme commissioned by the Royal Ballet in 2019), and Everyone Keeps Me by Pam Tanowitz for the Royal Ballet (2019).

Fullerton’s awards include Kulture2Couture Trailblazer Award, an initiative of the Mayor of London (2007), an Honorary Fellowship from Exeter University for her contribution to the arts and theatre (2008) and an MBE for her services to dance and opera (2010).