TANDeM team

You might meet some of these staff members when you come for your appointment.


Tammy Hedderly – consultant children's neurologist and team lead


Osman Malik – paediatric child and adolescent psychiatrist

Clinical nurse specialists

Claire Grose

Alice Bailey

Our clinical nurse specialists support families by providing medication reviews and individual and group therapies to children with neurodevelopmental disorders.They are also involved in training and clinical and academic research.

Clinical psychologists

Sara Sopena

Tamsin Owen

Our clinical psychologists provide neuropsychological assessment, group and individual psychological therapies to children with neurodevelopmental movement disorders. They also provide placements for psychology students and trainee clinical psychologists and conduct clinical and academic research relating to children with neurodevelopmental movement disorders. Supervision and consultation on the assessment and management of neurodevelopmental movements is also provided.

Assistant psychologist

TANDeM has a part-time assistant psychologist who supports with clinical assessments, one-to-one and group treatments in the clinic. They also help with clinical audit, service evaluation and several research studies in the clinic including "IIM" (looking at the genetic risk factors and clinical presentation for a clinical subtype of motor stereotypies called Intense Imagery Movements) and "TicGen” (investigating the genetic susceptibility factors of paediatric and adolescent tic disorders).