Sleep Disorder Centre

The Sleep Disorder Centre was established in 1992, and provides a comprehensive service in sleep medicine for the south east of England. It is one of the six largest centres in the UK.

The centre diagnoses and treats all aspects of adult sleep medicine, but respiratory disorders during sleep constitute the largest part of the workload. These include:

• sleep disordered breathing (SDB)
• hypoventilation syndromes (mostly related to increased body mass index)
• insomnia
• NREM parasomnias
• REM behaviour disorder
• sleep related movement disorders
• sleep related epilepsies and
• circadian rhythm disorders.

The centre is one of only a few in the UK with facilities for a full range of treatments for sleep disordered breathing, including continuous positive airway pressure (CPAP), non-invasive ventilation (NIV), orthodontic services for mandibular advancement devices, and surgery including bi-maxillary osteotomy.

Although bed partners will observe and complain about sleep disordered breathing, the subject themselves is usually unaware of their condition, but may notice a decline in daytime function and motivation, often accompanied by excessive daytime sleepiness. Measuring daytime sleepiness is therefore an easy marker of symptoms. One commonly used scoring system is the Epworth Sleepiness Scale (ESS), a questionnaire that assesses the likelihood of accidently falling asleep whilst undertaking eight common daily activities.

Sleep at night is essential for good health. Excessive sleepiness during the day causes a reduction in quality of life, decreased ability to drive safely, decline in intellect, and can be an antecedent to falls in the elderly. Increasing levels of respiratory dysfunction are associated with the development of arterial hypertension and the onset of adult type II diabetes, with cardiovascular sequelae, including stroke and myocardial infarct.

Measuring effectiveness

Patient related outcome measurements (PROMs) include assessing the patient’s subjective improvement in daytime sleepiness and function using the ESS (Epworth Sleepiness Score 0-24), and is therefore an effective indicator of the efficacy of therapy.

Talk to your GP about NHS treatment

To get referred with a sleep problem on the NHS, you should initially consult your GP who will advise you further. Your GP may suggest a referral to a specialist first (often in ENT surgery for snoring), or may suggest a referral straight to QVH. Where your problem is one of difficulty sleeping, sleep walking or sleep talking, odd behaviour or movements whilst asleep, your GP may write to QVH for an expert opinion first and we will contact you to make an outpatient appointment to assess your problem and give advice. The NHS does not undertake treatment for complaints of snoring unless this is associated with disorder of breathing in sleep.

How to make a sleep centre referral – information for health professionals.

Page last updated: 16 January 2024.

Dr Oliver Bernath

Special interests: All sleep disorders, especially those with neurological origin: narcolepsy, idiopathic hypersomnia, parasomnias (e.g. nightmares, sleepwalking), REM behaviour disorder, restless legs syndrome and periodic limb movements in sleep disorder, insomnia, nocturnal epilepsy, sleep/wake rhythm disorder, but also obstructive sleep apnoea and snoring.

Dr Oliver Bernath qualified in neurology, clinical neurophysiology/epilepsy, and sleep disorders. He is registered by the General Medical Council with added qualification in neurology. He is certified as sleep physician by the American Academy of Sleep Medicine and the German Society of Sleep Medicine (DGSM). He obtained a Doctorate in Medicine from the University of Ulm (Germany) for his research in muscle physiology.

Dr Bernath started his medical training at the University of Ulm (Germany) and expanded his studies with terms at University College London and the University of Otago (New Zealand). After graduating from Ulm, he trained as junior doctor at St Bartholomew’s Hospital in London. He then completed his neurology residence at the University of Chicago followed by postgraduate fellowships in clinical neurophysiology, epilepsy, and intraoperative monitoring at the University of California San Francisco (UCSF) and in Sleep Medicine at UCSF/Stanford. He obtained US Board certifications in all of these specialties. In 2000, he returned to the UK and worked at Atkinson Morley’s Hospital, Kingston Hospital, Guy’s and St Thomas’ Hospital and now at Queen Victoria Hospital in the sleep disorders clinic.

His work ranged from operational improvement programmes in clinics and hospitals, to national healthcare transformations, policy development and regulator design.

Dr Bernath was a scholar of the German National Merit Foundation (Studienstiftung des Deutschen Volkes) and won research prizes in epilepsy and sleep research. His latest field of interest lies in the science and clinical practice of nightmares and dreaming.

Mr Mark Jackson

Special interests: Sleep apnoea and disorders of ventilation, respiratory medicine

Mr Mark Jackson has been an established consultant physician in the Mid-Sussex area for 25 years. After qualifying in Medicine from the University of Birmingham Medical School, his postgraduate training was primarily in Cambridge. At the Respiratory Support and Sleep Centre at Royal Papworth Hospital, he delved into research on sleep apnoea, assisted ventilation and heart-lung transplantation and trained at Addenbrooke’s Hospital where he served as a clinical lecturer.

Following his comprehensive training, Mr Jackson was appointed as a consultant respiratory physician at the Princess Royal Hospital, managing a busy respiratory practice and leading the sleep apnoea service. He moved to Queen Victoria Hospital in 2020 and is the clinical lead for the Sleep Centre.

Page last updated: 10 January 2024.

Dr Susanna So-Shan Ng

Special interests: Sleep apnea, respiratory failure, and respiratory medicine

Dr Susanna So-Shan Ng joined Queen Victoria Hospital in 2022. She graduated from the Chinese University of Hong Kong in 2003 and underwent respiratory medicine training in Prince of Wales Hospital in Hong Kong, where she developed her interests in sleep apnea and respiratory failure. In 2009 she was awarded the Hong Kong Lung Foundation Fellowship and spent six months at Royal Prince Alfred Hospital in Sydney, Australia for training in sleep medicine and respiratory failure.

Dr Ng has a wide field of clinical and scientific interests. She has devoted herself to clinical research on obstructive sleep apnea. She has published evidence in internationally renowned and peer reviewed journals on topics such as the use of home sleep monitoring devices, the prevalence of obstructive sleep apena in elderly, treatment impact on metabolic profiles among patients with sleep apnea, and the relationships between craniofacial factors and weight reduction. She was awarded a research scholarship from the European Respiratory Society international congress in 2015 and the American Thoracic Society international conference in 2016.

Dr Ng also provides a respiratory service in Epsom General Hospital.

Page last updated: 5 February 2024.

Dr Rania Ward

Dr Rania Ward is the Principal Pharmacist for Sleep Medicine at the Regional Sleep Disorder Centre at Queen Victoria Hospital. She completed her MPharm at University of Manchester, a PhD in Neuroscience at King’s College London, a Postgraduate Diploma in Pharmaceutical Practice and Therapeutics at University of Bath, and a Master’s in Genomic Medicine at Imperial College London.

Throughout her career, Dr Ward has worked as a Clinical Pharmacist in more than 15 NHS Trusts, specialising in Sleep Medicine. She has extensive experience in the optimisation of pharmacological therapies and manages neurological sleep disorders that include central hypersomnias, parasomnias, limb movement disorders, and circadian rhythm disorders, also leading a dedicated insomnia clinic.

Her research focuses on the genomic basis of sleep conditions and the application of pharmacogenomics in sleep medicine. Her current work includes identifying “insomnia genes” through Genome-Wide Association Studies to inform the development of new therapeutic targets. She also promotes research through the active facilitation of clinical trials and leads a project exploring the use of artificial intelligence applications in sleep medicine.

Dr Ward has presented at national meetings and conferences such as those hosted by The British Sleep Society, the Clinical Pharmacy Congress, and RLS-UK. She collaborates with Kent and Medway Medical School, Imperial College London, and partners in the pharmaceutical sector to advance education and specialist care in Sleep Medicine.

Page updated: 22 October 2025