Sebastian Baxter MBChB FRCA Consultant Cardiothoracic Anaesthetist, Guy’s & St Thomas’ NHS Foundation Trust, London, UK Akhil Gupta MBBS FRCA BSc Consultant Anaesthetist, Lewisham Hospital, London, UK James O’Carroll MBBS FRCA Registrar in Anaesthesia, Guy's & St Thomas’ NHS Foundation Trust, London, UK Kariem El-Boghdadly MBBS BSc FRCA EDRA MSc Consultant Anaesthetist, Guy’s & St Thomas' NHS Foundation Trust; Honorary Senior Lecturer, King’s College London, UK Ade Ayeni MBBS MRCP FRCA Consultant Anaesthetist, Guy’s & St Thomas’ NHS Foundation Trust, London, UK Neel Desai MBChB BSc FHEA FRCA EDRA MRCP MRCS PG Cert Med Ed, Dip Reg Anaesthesia Consultant Anaesthetist, Guy’s & St Thomas’ NHS Foundation Trust, London, UK