Timothy (Tim) Hugh Guerrier was a consultant ENT surgeon at the Royal Hampshire County Hospital, Winchester from 1978 to 2003 with a special interest in functional endoscopic sinus surgery (FESS). Tim was the eldest of four sons of Hugh Phillip Guerrier, a consultant general surgeon with an interest in urology at Torbay Hospital, Torquay and his wife Shelagh Marion Guerrier née Streafeild, who trained at the Royal Free Hospital and became a consultant anaesthetist. Her father, William Hugh Raymond Streatfield, read medicine at Queens’ College, Cambridge and St George’s Hospital Medical School, qualifying in 1906. From 1908 he followed a career in general practice. Tim was educated initially at Highgate School until his family moved to Devon and then at Bryanston School. He started to read medicine at Gonville and Caius College, Cambridge, but after two years decided to commence his clinical studies at Guy’s Hospital Medical School, where he did both his house officer posts and a further six months as a senior house officer to Lord Russell Brock and Donald Ross on the thoracic unit. This was followed by a year as an anatomy demonstrator at the London Hospital Medical School. A move to Bristol for a casualty post and more general surgery resulted in the beginning of his ENT training under Jim Freeman at the Bristol General Hospital. In 1971 Tim moved to a joint junior registrar post at Mount Vernon and Middlesex hospitals, London, working with Douglas Ranger and Roland Lewis. He gained his FRCS in 1972. A year later he became a senior registrar on the Southampton/Poole rotation working in Poole with Alan Bracewell and in Southampton with John Glanville, Douglas Worgan and Noel Morgan. In 1978 Tim was appointed as a consultant ENT surgeon at the Royal Hampshire County Hospital in Winchester. In the 1980s, as a result of the work of Walter Messerklinger in Graz, Austria and his younger colleague Heinz Stammberger, the use of the rigid fibrescope combined with the increasing sophistication of CT scanning led to the development of functional endoscopic sinus surgery. Tim attended one of the early courses conducted by Stammberger and became a keen promoter of FESS in the UK through courses in London, Liverpool and Glasgow. His experience with FESS featured in Tim’s presidential address to the section of laryngology and rhinology of the Royal Society of Medicine in November in 1999. He concluded his address with a cleverly constructed slide showing King Alfred the Great’s well-known statue in the Broadway, Winchester, brandishing not a sword but a rigid endoscope! Tim married Guy’s staff nurse Jenny (née Turner) in 1967. They had five children: a daughter and four sons. None of them have gone into medicine, saying that they would not work the hours their father did! In retirement Tim, who was a friendly, charming and knowledgeable person, enjoyed having time for theatre, concerts, gardening, travel, cooking and seeing his extended family. He became a keen volunteer at the RCS Hunterian Museum and through this joined the Hunterian Society, having to decline the presidency because of ill health. He was involved in the Winchester Festival of literature and music, serving on the committee and as chairman. He also volunteered at Winchester Cathedral. Tim died on 10 October 2020 of metastases from a carcinoma of the caecum diagnosed seven years previously. He was 79.