UK Ataxia Consortium Olaf Ansorge, Department of Neuropathology, John Radcliffe Hospital, Oxford, OX39DU Peter Baxter, Sheffield Childrens Hospital M Zameel Cader, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU Lucinda Carr, Neurology Department, Great Ormond Street Hospital, Great Ormond Street, London, WC1N 3JH Raj DaSilva, Department of Neurology, Essex Centre for Neurological Sciences, Queen's Hospital, Romford Nick Fletcher, Walton Centre NHS Foundation Trust, Liverpool, L9 7LJ Nicola Foulds, Department of Clinical Genetics, Southampton University Hospitals Trust, Southampton Diane Friend, Academic Department of Neurosciences and University of Sheffield, Room M26, M floor, Royal Hallamshire Hospital Geraint Fuller Gloucestershire Royal, Great Western Road, Gloucester Ralph Gregory, Poole General Hospital Marios Hadjivassilliou, Academic Department of Neurosciences and University of Sheffield, Room M26, M floor, Royal Hallamshire Hospital Robert Hastings, 8 Department of Clinical Genetics, St Michael's Hospital, Bristol, BS2 8EG Sandeep Jayawant, Department of Paediatrics, Oxford University Hospitals NHS Trust, Oxford, OX3 7LJ Helen Kingston, Genetic Medicine, 6th Floor, Saint Mary's Hospital, Oxford Road, Manchester, M13 9WL Dr Emma Kivuva, Clinical Genetics Department, Royal Devon & Exeter Hospital, (Heavitree) Gladstone Road Dr Marie-Helene Marion, St Georges Hospital, Tooting Meriel McEntagart, Department of Clinical Genetics, St Georges Hospital Duncan Mitchell City Hospitals Sunderland NHS Foundation Trust Kayll Road, Sunderland, Tyne and Wear SR4 7TP, United Kingdom Patrick Morrison 10 School of Medicine, Dentistry and Biomedical Sciences, Queens University, Belfast Richard Newton Royal Childrens Hospital Pendlebury M274HA Manchester Mary O’Regan Fraser of Allander Neurosciences Unit, Royal Hospital for Sick Children, Glasgow G3 8SJ Dr Susan Price, Department of Clinical Genetics, Northampton General Hospital, Dr Julia Rankin, Clinical Genetics Department, Royal Devon & Exeter Hospital, (Heavitree) Gladstone Road Professor Robert Robinson, Great Ormond Street Hospital, Neurology Department, Great Ormond Street Hospital, Great Ormond Street, London, WC1N 3JH Dr Anand Saggar, St Georges Hospital, NHS Trust and Senior Lecturer in Medicine. Dr Eamonn Sheridan, Leeds General Hospital Professor Kevin Talbot, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU Dr John Tolmie, Department of Clinical Genetics, Southern General Hospital, Glasgow G51 4TF Professor Tom Warner, Department of Neurology, Royal Free Hospital, Pond Street, London Dr Evangeline Wassmer, Neurology Dept, Birmingham Children's Hospital Steelhouse Lane B46NH Birmingham Dr Paul Worth, Department of Neurology, Norfolk and Norwich University Hospital, Norwich