In their collaborative series Utopia, Sweden's studio esinam and London-based architecture photographer Rory Gardiner pay tribute to some of London's greatest examples of Brutalist architecture: The Barbican Estate, Royal National Theatre, Hayward Gallery, Trellick Tower and the Robin Hood Gardens.

The collection of images aims to capture the subtle beauty of Brutalism at its best. As explained: "The sculptural use of concrete, as structure, surface, detail, totality and as ornament. Its tactile surfaces. The raw and exposed, but at the same time the careful and detailed. The massive scale of the projects and the human-centred ideas that once shaped this form of architecture."

The series was photographed during the early spring of this year. A selection of the photographs have been printed in limited edition and are available at www.studioesinam.com.

studio esinam is a creative studio based in Sweden and was founded by art director and architect duo Josefine Lilljegren and Sebastian Gokah in 2013. For more information about Rory, visit rory-gardiner.com.

Via studio esinam | All images courtesy of Rory Gardiner