Haste went on to graduate from the Royal College of Art,[4] where she first became interested in wire sculpture, using galvanised wire mesh over a steel armature, later on using the wire mesh as sculpting material on its own for indoor work.[5] Haste's sculptures are generally created by building up many layers of wire mesh over the steel armature skeleton, spray finished with enamel paint.[4] In 1999, her sculpture of a baboon won the BBC Wildlife Art Award.[3]
In 2010 Haste was commissioned by Historic Royal Palaces to create a series of pieces, (thirteen in total), which tell the story of the Royal Menagerie that had existed at the Tower of London from 1210 until 1833. Throughout the 600 years that there was a menagerie at the Tower of London, apes and monkeys were always a feature. Baboons roamed the Tower freely until, in 1833, a child was killed by their aggressive behaviour. Soon after, the entire menagerie was moved to Regent's Park, to become what is today the London Zoo. Using research from the Tower of London archives, Haste returned the animals to their original locations around the Tower.[7][8][9]
Haste's Waterloo Elephant was originally commissioned by the London Underground as part of its Platform for Art programme and set up at the Gloucester Road tube station. After the success of Haste's "Underground Safari" pieces, the London Underground purchased the African elephant sculpture and installed it near the ticket hall of a new Jubilee line extension at the Waterloo tube station. The new location is on the site of the old Astley's Amphitheatre – sometimes considered the world's first circus ring – where in 1828 an elephant that was part of the show was frightened and blundered into the crowd.[10][11]
Haste won the Artists for Nature Foundation Award (where she is a member)[21] in 1997, the Dale Rowney Illustration award in 1998, and the BBC Wildlife Art Award in 1999.[3] Haste is featured among 95 sculptors in Guy Portelli's book "Modern British Sculpture".[3][22]