I graduated from UCL last year after I did 4 years of chemeng and trust me it's a uni that you do not want to go to unless you are well connected with people. After working my ass off doing coursework that is due in a few weeks before exams- I barely get time to study since I do a lot of coursework and when I mean a lot I mean a LOT. A lot of people that arent hardworking do not go through this process- they get sends off similar coursework from the year above or from other students and they collaborate and spend less time on cwk and work more for exams. This is if you are well connected and within the circle, if you are not you are in trouble my friend. You will have to work your ass off the entire degree whilst you see people chill and still get higher marks than you. If you are religious, good for you because societies in the years above will let you access to their work and hence you will end up doing less work. If you enter uni outside of this loop then you're in trouble. Other universities change their exams and courseworks greatly over the years but UCL does not and hence quite a large fraction of students end up doing dubious things. Furthermore, you do not get as much coursework in other universities and you are more likely to enjoy chemical engineering and learn a lot more without killing yourself over it.