Chemical engineering is very demanding you literally study a hell load at uni, far more than other types of engineering. It's more maths based and learning the industrial process than chemistry but you need to have a very good grasp of chemistry. It isn't the most interesting career and other types of engineering pay equally as much, in fact some pay more. So with that in mind don't go after the money, you may end up regretting it. Universities like Bath and Nottingham want A*s whereas Imperial actually give typical offers of 3A* (very rare and incredibly difficult to get an A* in physics or FM but both are not required I'm telling you for the purpose of understanding ). Overall I would suggest you have a look at different courses and narrow down a few which you like not just for the money.