Just in case it useful to anyone, the video is Dr. Stephen Sheppherd (Consultant, Intensive Care and Anaesthetics, St. Bartholomew's Hospital London).
Describes using an anaesthetic machine (with ventilator) an an 'ICU ventilator'. It is a Penlon Prima 465 but principles would surely apply to many brands. https://www.youtube.com/watch?v=TRgDCQlHgCU&feature=youtu.be
Anaesthesia ventilators have been installed in large numbers at NHS Nightingale London & London region hospitals to ventilate COVID-19 patients. https://www.penlon.com/Blog/April-2020/Penlon-Anaesthetic-Machines-in-NHS-Nightingale-Hos