Prevention of blood clots, medically known as venous thromboembolism (VTE), is a key patient safety priority for hospitals. VTE includes both deep-vein thrombosis (DVT) and pulmonary embolism (PE), and the risk of developing VTE is highest following major surgery. All adult patients admitted to hospital need to be risk assessed for VTE according to the criteria set out in the NICE guidance, so that preventative treatments can be given. The VTE risk assessment has been included as a National Quality Requirement in the NHS Standard Contract since 2014/15. NICE published guidelines in 2018 . It provides recommendations and cost-effective measures to reduce the risk of VTE.