Colorectal cancer is the second most common cause of cancer death in the UK. Each year around 15% of people with colorectal cancer present with an obstruction. Patients are living longer with stents in situ, so choosing the right design of stent is important to maximise patients' quality of life. Two designs of stent are in common use in the UK today: covered and uncovered. Currently there is insufficient information to decide which of these two stent types is the best to use in people with colorectal cancer. CReST2 is designed to determine which stent design is the most efficacious in improving the quality of life in patients with bowel obstruction arising from colorectal cancer.