Diana Toucedo studied a degree in Film and Audiovisual Communication, specialising in editing at ESCAC (Film and Audiovisual School of Catalonia, Barcelona University) in 2008, and went on to do a Masters in Contemporary Film and Audiovisual Studies at the Pompeu Fabra University in 2011 She made her first feature-length documentary as an editor in conjunction with ESCAC, Tragovi (2009), which was filmed in Bosnia-Herzegovina. She spent two years working at the Mariscal Studio on the editing of the animated film, Chico and Rita (2010), directed by Fernando Trueba and Javier Mariscal, and she has worked with the prestigious designer on numerous visual works. Alongside the Catalan sculptor, Jaume Plensa, she has edited and directed the images of a visual sculpture in the post-production phase in Seoul, Korea. Simultaneously, she has worked on several occasions as director: Ser de Luz, with material by Gustav Deutsch (2009) and Tres tiempos tres gestos, on the work of Naomi Kawase (2010). She worked with Isaki Lacuesta on the editing of his correspondence film with Kawase, In Between days (2009), for CCCB and All the Night Long (2010) for TCM. The documentary was highly praised by critics at the San Sebastian Film Festival ("through exquisite editing, Gardner talks to herself", or "sophisticated editing that makes past and present talk"). La noche que no acaba received the award for best documentary of the year at the Spanish Film Festival in Toulouse (2011). She is now directing her first feature-length documentary, Trinta Lumes, in Galicia.
