Professor Toby Maher is a consultant respiratory physician at Royal Brompton and Harefield hospitals, where he treats private and NHS patients.

He studied at the University of Southampton, then trained in respiratory medicine at Royal Brompton Hospital, the transplant unit at Harefield Hospital, and at St Mary’s Hospital, Paddington. During his training, he gained a master's (MSc) in respiratory medicine at Imperial College London.

In 2005, Professor Maher was awarded a Wellcome Trust Clinical Research Fellowship. This enabled him to study the molecular mechanisms involved in the development of idiopathic pulmonary fibrosis. He did this research at the centre for respiratory research at University College London and it culminated in the award of a PhD.

Alongside Professor Toby Maher's role as a consultant respiratory physician at Royal Brompton Hospital, he is professor of interstitial lung disease at Imperial College London and honorary senior research associate at University College London.

Clinical expertise

Professor Toby Maher has a subspecialty interest in interstitial lung disease.

His further areas of expertise include: 

  • idiopathic pulmonary fibrosis (IPF)
  • hypersensitivity pneumonitis
  • sarcoidosis
  • Langerhan's cell histiocytosis
  • Lymphangioleiomyomatosis.

He also manages pulmonary fibrosis and lung disease associated with systemic conditions such as rheumatoid arthritis, Scleroderma and Wegener’s granulomatosis.

Research interests

Professor Maher's research interests include: 

  • basic and translational research into idiopathic pulmonary fibrosis
  • the use of acoustic lung imaging in diagnosis and disease monitoring in patients with chronic respiratory conditions
  • biomarker discoveries and development of new treatments for interstitial lung disease. 

Professor Maher is the lead consultant for clinical trials at the hospitals' interstitial lung disease unit.

In 2017, the British Lung Foundation (BLF) awarded Professor Toby Maher the role of research chair in the area of respiratory research. The role is an academic position, created at the level of professor, which recognises a significant contribution to scholarship and research.

He is an honorary senior research associate at University College London, and he works closely with scientists at the Centre for Inflammation and Tissue Repair, UCL. He has active collaborations with a number of academic partners, including:

  • University of Nottingham, UK
  • University of East Anglia, UK
  • National Jewish Hospital, Denver, USA 
  • McMaster University, Canada.


As well as publishing original research, expert reviews and book chapters, Professor Maher acts as an expert reviewer for a number of international respiratory journals. 

He is an associate editor for PLOSone and is a past Senior Editor of Respirology. He is on the editorial board of the European Respiratory Journal, the European Respiratory Review and F1000 Journal, and on the advisory board of Lancet Respiratory Medicine.


Professor Toby Maher is a professor of interstitial lung disease at the National Heart and Lung Institute, Imperial College London.

He has spoken at international conferences and meetings, such as the American Thoracic Society Meeting in San Francisco and the 17th International Colloquium on Lung and Airway Fibrosis in Modena, Italy.