After leaving Tonbridge in 1999, William went on to study Neuroscience and Medicine at St John's College, Cambridge, from which he graduated in 2005. Since leaving university, William has obtained Fellowship of the Royal College of Surgeons and of the European Board of Neurological Surgery. He was awarded the Braakman Prize for Best Examination Performance by the European Board of Neurological Surgery in 2016.

William is currently working at Birmingham Children's Hospital, where he is Consultant Neurosurgeon and Surgical Lead of the BCH Children's Epilepsy Surgery Service - one of four nationally commissioned centres.

In his current role, William subspecialises in childhood brain tumours, epilepsy surgery, neuroendoscopic techniques and conditions affecting 'eloquent' brain areas - those that are responsible for speech, motor and sensory and essential functions.
He, along with his colleagues, is responsible for the 70 brain tumour and 60 epilepsy surgeries that take place each year on average at the hospital.

As well as his vital everyday work in the hospital, William has also been involved in a number of charitable projects to fundraise for hospital equipment - most recently, he was awarded the Patron Award in March 2024 by Gymshark CEO Ben Francis for leading an appeal to raise £1.5 million in funds for an intraoperative MRI facility for Birmingham Children's Hospital. This set-up will significantly reduce the need for further surgeries for children by providing up-to-date MRI imaging during surgery, as well as cutting down surgery time by several hours.

William's work has been recognised nationally and internationally. He has authored over 50 publications in scientific journals and presented over 70 abstracts in national and international conferences. In addition to organising bi-annual European intra-operative ultrasound workshops, he is a regular guest speaker at medical conferences.

As well as his current role at Birmingham Children's Hospital, William is co-chair of the British Paediatric Neurosurgery Group Scientific Committee, a member of the International Society of Paediatric Neurosurgery Scientific Committee, and Surgical Tutor for the Royal College of Surgeons, where he is responsible for 50 postgraduate surgical doctors.

In 2014, William helped fellow Parksider Dr James Chan (Cantab, Oxon, FRCS) (PS 94-99) revise Dr Clugston's (CR 78-18) 4th edition Penguin Dictionary of Science.