Dr David Lee BSc PhD CertEd CPsychol AFBPsS CSci is a Chartered Psychologist and Chartered Scientist who has been teaching, researching and disseminating findings from his own research into sleep and the psychobehavioural treatment of insomnia for the last twenty years.  He holds memberships with the World Sleep Society, the British Sleep Society, The Institue of Occupational Safety and Health, The British Association of Brain Injury Case Managers, The Vocational Rehabilitation Association and The British Psychological Society, where he also holds an Associate Fellowship.  Sleep Unlimited are supporters of the Institute of Registered Case Managers.

David has held various academic posts, but now works full-time as Clinical Director for Sleep Unlimited Ltd., a company specialising in the delivery of training of psychobehavioural treatment strategies for insomnia under the umbrella of the REST® programme and in the assessment and treatment of individuals with insomnia.

​The company is increasingly working with legal firms, case managers and multi-disciplinary teams; providing expert and treatment reports for people who have experienced head injuries, and clinical negligence casework

Dr Melanie Davis MA (Hons), DClinPsy, CPsychol, AFBPsS is an experienced Clinical Psychologist, being a Chartered Member and Associate Fellow of the British Psychological Society and registered with the Health and Care Professions Council as a Practitioner Psychologist.

Gaining her initial experiences within nursing and care home settings, the prison service (working with young offenders) and child and family mental health services, Mel completed her clinical psychology training in 2008 with a passion for working psychologically with people living with long-term physical health conditions. This has developed into a specialist interest and expertise in pain management and how quality of life can be enhanced through better psychological understanding and encouragement of self-care, with sleep being a key focus.

Following qualification, Mel gained experience working in both primary care and hospital settings practicing talking therapies whilst also being continuously involved in teaching, training and supervising others in psychological approaches. She has published her doctoral work within the area of therapist learning and development, writing about the crucial role of self-practice and self-reflection. Trained in a range of different therapeutic modalities, Mel has found the combination of working with psychological and behavioural interventions for insomnia, mindfulness and Cognitive Analytic Therapy (CAT) particularly effective in enhancing both psychological and physical well-being and is focused on delivering this message to health professionals and clients alike.

Tom is a qualified clinical psychologist who is particularly interested in neuropsychology- the study of the interaction between brain and behaviour. His particular area of interest is working people who have cognitive impairments – such as people who have brain injuries, dementia, learning disabilities or other long-term health conditions.

Working in this way, Tom has specialist experience of conducting a variety of neuropsychological assessments, report writing, adapting and delivering CBT for cognitive impairments, working with teams, delivering training and consultation as well as working with challenging behaviour.

He first started getting interested in sleep while working as a research assistant for Newcastle University when he worked on a study that looked at the interaction between sleep and cognition in people with bipolar disorder. Since then he has followed this interest by attending training from Sleep Unlimited as well as within the NHS. Since then sleep has always been on his agenda- and he has tried to help people sleep better by offering advice and guidance wherever possible.

Dr Toby Cushing has a BSc (Hons) in Psychology from Northumbria University and a Doctorate in Clinical Psychology from the University of East Anglia. She has also completed additional training in Cognitive Behaviour Therapy, Cognitive Behaviour Therapy for Insomnia, Acceptance and Commitment Therapy, Dialectical Behaviour Therapy, and Clinical Supervision.

Her interest in sleep is one of the things which brought her in to the study of psychology, and her undergraduate dissertation was focused on the treatment of acute insomnia. After she qualified as a Clinical Psychologist in 2020, she worked in pain management and stroke recovery in the NHS. She continued to have a special interest in sleep, which led to her attending training with Sleep Unlimited. She continues to work in stroke recovery in the NHS, as well as working with Sleep Unlimited.

What fascinates her about sleep is how important it is for our overall health and functioning. The importance of sleep can often be overlooked in our busy lives, but good quality and sufficient sleep is essential for health and wellbeing.

Dr David Scott trained as a Clinical Psychologist in New Zealand.  He has a Diploma in Clinical Psychology and a PhD. Registered with the Health and Care Professions Council as a Practitioner Psychologist he is also a Chartered Member of the British Psychological Society.

Soon after becoming a Clinical Psychologist, he developed an interest in physical health problems and has worked across a range of physical health domains including cardiology, audiology and endocrinology.

He’s been particularly interested in and has specialised in sleep for the last 10 years after being inspired by a workshop run by Professor Allison Harvey.  He subsequently attended the Sleep Unlimited training at the BPS and since then his clinical work has been focused on sleep.

Jackie is a qualified Clinical Physiologist in Neurophysiology and one of a few registered polysomnographic technologists (RPSGT) in the country.  She has served on the executive committee of the British Sleep Society. Within this role she was the Spring Meeting Coordinator and represented the society developing the MSC programme with the Department of Health along with colleagues from other specialties. She was also involved in the selecting and interviewing process for candidates applying for the MSC in respiratory and sleep medicine.

Jackie edited a column for the BSS Newsletter during which she discussed the RPSGT credential and gave advice and views on the re-registration process.​

In 2012 she became a member of the RCCP (registration council for clinical physiologists) council, and was the first sleep physiologist to gain the M Level registration, taking on the role of scrutineer of applications to the register under the sleep modality for both the basic and M level register.

Jackie analyses and provides comprehensive reports on overnight sleep studies which lead to accurate diagnosis and treatment planning.

Jade Warner BSc, MSc is an Assistant Psychologist and Psychology graduate from Northumbria University. She graduated her BSc with first class honours and her MSc with Commendation. Jade has been accepted onto the Doctorate of Clinical Psychology course in order to become a fully qualified Clinical Psychologist.

She has experience in working with people with acquired brain injury and delivering low-level psychological intervention to clients with brain injury and associated mental health problems – and also previously worked as an Assistant Psychologist within the Child and Adult Mental Health Service (CAMHS) and as an Assistant Psychologist within an Acute Adult Inpatient Service.

​Jade assists Dr David Lee with the assessment and treatment of individuals with insomnia, as well as helping the Sleep Unlimited team to deliver training of our psychobehavioural treatment strategies for insomnia: the Foundation and REST programmes.

Denise Kelly-Hughes BSc, MSc is an Assistant Sleep Psychologist and a Psychology graduate from Northumbria University. She graduated her BSc with second class honours and her MSc with Commendation.

​During her time at university she was able to assist in a project investigating Type D personality and cardiovascular activity, that was later published in the Psychology and Health journal. Denise is currently building up her experience in the field of sleep psychology to further her career.

Jordan has an MSc in Sport and Exercise and a BSc (Hons) in Sport and Exercise (Applied Sports Science).

After completing her undergraduate degree, she was really interested in physiology and decided to develop her knowledge further with a masters.

Jordan works in our Sleep Physiology department.

Katie has a range of experience within different sectors and brings enthusiasm and energy to Sleep Unlimited with her passion to support our customers and colleagues.

Mandy started working at Sleep Unlimited at the beginning of 2016.

She’s has previously worked in healthcare and has experience working within a diverse range of businesses.

She is dedicated to providing our clients with an excellent service through our assessment and training processes.