Prof Butler is professor of plastic and reconstructive surgery and director of the Wolfson Centre for Reconstructive Surgery. He is interested in complex reconstructive problems.

He has developed stem cell based therapeutic solutions for the treatment of patients with fibrosis secondary to scleroderma, post-cancer radiotherapy, lichen sclerosis, graft versus host disease and burn injury.

After medical qualification, he pursued his research interests as a fellow at Massachusetts General Hospital and Harvard Medical School.

He completed his clinical training in London and New York and on his appointment at the Royal Free Hospital and University College London (UCL) in 1999, set up an active research group at the UCL Royal Free campus. He developed and directs the MSc programme in burns plastic and reconstructive surgery.

One of prof Butler's main research interests is in the treatment of fibrotic conditions which parallels a large clinical patient practice with various difficult fibrotic conditions.

His other research interest is in the development and application of tissue engineering, 3D bioprinting and nanotechnology, as well as facial allotransplantation.