[5] Moving from Iceland to the United Kingdom in 1985, she gained an art foundation diploma after studying a year course at Sunderland Polytechnic.
Middleton then enrolled at West Surrey College of Art and Design, Farnham, where she studied for three years and graduated with a BA in photography, film/video and animation.
[7] In 2017, Middleton showed off her first photograph exhibition, titled Thoughts of Home, a series of cyanotype prints documenting the wildlife and natural environments of Iceland.
[4] Middleton notes her inspiration for Thoughts of Home as being, both, her nostalgia for growing up in Iceland, while also the pairing of the beauty in nature and practical efficient undertones.
Middleton was inspired to pursue this project was by through how unicellular organisms, known as phytoplankton, are being destroyed by microplastics, even though they are vital to keeping the humans alive by producing the majority of the atmosphere's oxygen.