Mr Phillips' clinical interests are in endoscopic skull base surgery, cranial neurosurgery, particularly pituitary surgery, trigeminal neuralgia, subarachnoid haemorrhage and radiosurgery. He has also contributed to national policy in radiosurgery.

Clinical interests focus on: • Neurosurgical oncology of the brain and spinal cord • Surgery for cranial neuropathies (trigeminal, glossopharyngeal, geniculate neuralgias; hemifacial spasm) • Complex spinal surgery He also focuses on: • Degenerative disorders of the lumbar spine and cervical spine • Surgeries for facial pain and cranial nerve hyperactive disorders • Brain tumours • Spinal cord tumours • Disorders of cerebrospinal fluid dynamics • Disorders of the cranio-cervical junction