D Sharman (Presenting Author) – Northampton General Hospital, Northampton; J Timperley – Northampton General Hospital, Northampton; A Zaidi – Manchester Royal Infirmary, Manchester; E Duncan – University Hospital Bristol, Bristol; F Leyva – University Hospitals Birmingham, Birmingham; N Linker – James Cook University Hospital, Middlesbrough; C Pepper – Leeds Teaching Hospital, Leeds; T Robinson – Nottingham University Hospital, Nottingham; S Sporton – St Bartholomew’s University Hospital, London; K Stromberg – Medtronic, Minnesota; A Pol – Medtronic, Maastricht; P Roberts – Southampton General Hospital, Southampton